User-Centric Hospitality

The Architecture of Guest-Centric Hospitality: Engineering Integrated Point of Sale and Property Management Ecosystems

The transformation of the global hospitality industry from a traditional, operationally focused service model to a sophisticated, technology-enabled, guest-centric ecosystem represents a paradigm shift in how properties manage the guest journey. Historically, the point of sale (POS) was defined as a physical location, typically a counter equipped with a cash register, where financial transactions occurred in a stationary and isolated manner.1 In the contemporary digital landscape, the POS has evolved into a "point of service," serving as a dynamic hub that orchestrates sales, guest experience, and back-end operational workflows through a unified interface.1 This evolution is underpinned by the deep integration of Point of Sale applications with Property Management Systems (PMS), enabling a seamless "charge-to-room" capability that allows guests to book accommodations, purchase high-value ancillary services such as gym passes or spa treatments, and settle dining bills directly through their room folio.3

The Philosophy of Guest-Centric Hospitality Systems

A guest-centric system is characterized by its fundamental prioritization of the individual needs, preferences, and satisfaction of the guest over purely operational efficiencies or immediate revenue maximization.7 While traditional management frameworks focused on transactional throughput, the guest-centric approach recognizes that the foundation of sustainable business growth in the modern era is the creation of personalized, memorable experiences.7 This strategy requires a holistic view of the guest journey, spanning from the initial booking phase to post-stay engagement.7

The cornerstone of this model is personalization, which extends far beyond basic salutations. It involves a granular understanding of guest behaviors, including travel patterns, room temperature preferences, pillow firmness, dietary requirements, and special occasions.7 By maintaining comprehensive guest profiles that are synchronized across every touchpoint on a property, a hotel can ensure that a recurring guest who prefers high floors with city views is automatically accommodated without the need for repetitive requests.7 This proactive service model anticipates needs rather than merely reacting to them, which significantly enhances perceived value and fosters long-term brand loyalty.8

Core Element	Functional Description	Impact on Guest Journey
Personalization	Tailoring services based on historical data and stated preferences.	Increases emotional engagement and perceived service quality. 7
Proactive Engagement	Anticipating needs based on behavioral cues and previous stays.	Exceeds guest expectations and builds a competitive advantage. 8
Integrated Feedback	Utilizing real-time loops via mobile apps or tablets to capture sentiment.	Enables immediate service recovery and operational adjustment. 8
Omnichannel Service	Consistent interaction across mobile, kiosks, and in-person staff.	Provides freedom of choice and reduces transactional friction. 1

The implementation of such a system necessitates a robust technological infrastructure capable of supporting bidirectional, real-time data exchange between disparate software modules.7 The technical manifestation of this philosophy is most evident in the integration of the PMS and the POS, which transforms the guest's mobile device or a property kiosk into a versatile tool for managing every aspect of their stay.14

Technical Foundations: The Synergy Between PMS and POS

In the architectural hierarchy of hotel technology, the Property Management System (PMS) serves as the "central nervous system" or the "operating system" for the entire property.2 The PMS is responsible for the core administrative functions that sustain daily operations, including reservation management, check-in and check-out procedures, room assignments, housekeeping coordination, and the management of guest folios.2 Conversely, the Point of Sale (POS) system is designed to handle financial transactions at specific outlets, such as restaurants, bars, spas, fitness centers, and gift shops.2

When these systems operate as isolated silos, the property faces significant operational inefficiencies, including manual data entry, billing discrepancies, and a fragmented guest experience.2 Integration bridges these silos, allowing for a unified data environment where the POS can query the PMS for guest eligibility and post charges directly to the room folio without manual intervention.3

API-First Architectures and Middleware Solutions

Modern hospitality technology primarily relies on Application Programming Interfaces (APIs) to facilitate this cross-system communication.13 An API acts as a secure corridor through which data travels when requested by another system.18 The industry is increasingly moving toward "API-first" architectures, where software components are designed with built-in communication interfaces from the outset.17 This modular approach allows for high-speed, low-latency connections that are essential for real-time synchronization.13

For older properties utilizing legacy "on-premise" systems, direct API integration may not be natively supported. In these scenarios, hoteliers often employ middleware—a software layer that acts as a translator between two incompatible systems.2 Middleware facilitates the exchange of data fields such as room status, guest preferences, and folio balances, ensuring that the POS at the gym or restaurant has the most current information regarding the guest's "checked-in" status.2

Bidirectional vs. Unidirectional Data Synchronization

The depth of integration is defined by the directionality of the data flow.13

1. Unidirectional Synchronization: In a one-way setup, the PMS typically pushes updates to external systems (such as a channel manager), but those systems cannot send information back.13 This is often insufficient for guest-facing POS applications because it prevents the real-time posting of charges to the room.13
2. Bidirectional Synchronization: A two-way flow of information ensures that all connected systems are working from the same dataset at all times.13 When a guest checks into their room, the PMS notifies the POS systems throughout the property. Conversely, when a guest purchases a gym pass, the POS updates the PMS, which reflects the charge on the guest's folio instantly.5

Integration Aspect	Bidirectional Flow	Unidirectional Flow
Data Consistency	Real-time alignment across all departments.	High risk of mismatched or delayed records. 13
Guest Autonomy	Guests can charge to room from any terminal.	Requires manual verification by staff. 13
Operational Efficiency	Automates financial reconciliation processes.	Requires intensive manual data entry and audit. 5
Revenue Accuracy	Minimizes errors and billing disputes.	Prone to human error and uncollectible charges. 2

Technical Workflows for the "Charge-to-Room" Capability

The ability for a guest to charge miscellaneous services to their room folio is not a single action but a controlled sequence of digital search, verification, and posting operations.21 This workflow is designed to protect the property's revenue while providing a frictionless experience for the guest.22

Phase 1: Authentication and Pre-Authorization

The transaction lifecycle begins at the moment of check-in, whether performed at the front desk or via a mobile application.22 The hotel collects the guest's credit or debit card information and initiates a "pre-authorization".22 This is a temporary hold placed on the guest's funds that verifies the card's validity and ensures there are sufficient funds to cover the room rate, taxes, and a predetermined amount for incidentals (often $50 to $100 per day).22

In advanced systems, this pre-authorization is linked to a "token"—a secure, encrypted representation of the card that allows the hotel to process future charges without storing the actual card number in the PMS or POS.22 This tokenization is a critical component of Payment Card Industry (PCI) compliance, reducing the risk of data breaches.22

Phase 2: On-Property Transaction Execution

When a guest visits an ancillary outlet, such as a fitness center to obtain a gym pass or a restaurant for dinner, the user-centric POS application follows a specific technical sequence:

1. Inquiry: The POS operator (or the guest via a self-service app) initiates an inquiry by entering the guest's room number and surname.5
2. Verification Call: The POS system sends a request to the PMS, typically using a getReservations or postInquiry API call.25
3. Status Validation: The PMS verifies that the reservation is currently in a "Checked-In" state and that the guest has "Post" privileges (meaning they have a valid credit card on file and have not exceeded their pre-authorized limit).25
4. Charge Posting: Upon verification, the POS sends a postBillingCharges request back to the PMS.25 This request includes the reservationId, a specific transactionCode (e.g., for "Gym" or "F&B"), the final amount, and a reference for the itemized bill.28
5. Folio Update: The PMS acknowledges the charge and updates the guest's folio in real time, making the transaction visible to the guest on their mobile device or in-room television.2

Phase 3: Final Settlement and Bill Transparency

At the conclusion of the stay, the PMS compiles all charges from every outlet—including room rates, dining, spa, and gym passes—into a single, itemized document known as the folio.2 The integration ensures that the final "capture" of funds occurs as a single transaction against the pre-authorized card, which simplifies the guest's financial statement and reduces the likelihood of chargebacks.22

The system provides "bill transparency," allowing guests to review their charges at any time during their stay.2 This real-time access reduces "folio anxiety" and significantly lowers the volume of billing disputes handled by front desk staff during the checkout process.2

Security, Compliance, and Industry Standards

The movement of sensitive financial and personal data across hospitality tech stacks requires adherence to rigorous security protocols.13

PCI DSS and Data Encryption

Hospitality providers must maintain Payment Card Industry Data Security Standard (PCI DSS) compliance, often at Level 1, which represents the highest level of security for entities processing card transactions.22 Modern integrated systems enforce encryption for all data in transit using HTTPS and secure, token-based authentication for all API calls.13 Furthermore, sensitive identifiers such as credit card numbers are shielded through built-in tokenization, ensuring that the actual payment data is never exposed within the hotel's operational software.22

The Role of HTNG Standards

To mitigate the historic complexity of connecting disparate PMS and POS systems, the industry has adopted standards established by Hospitality Technology Next Generation (HTNG), a workgroup within the American Hotel & Lodging Association (AHLA).19 Historically, developing a new integration could take months of custom programming.19

The HTNG Express PMS Integration Specification was developed to accelerate this process.19 By defining a limited but essential set of data fields—Reservation, Guest, Folio, and Room information—HTNG Express allows vendors to establish connections in days rather than months.19 This standardized "handshake" ensures that a third-party gym pass application or a digital concierge app can communicate with a property's Oracle or Mews PMS without the need for bespoke engineering for every property.19

User Experience (UX) Design for Guest-Facing Applications

The effectiveness of user-centric hospitality applications depends on a design philosophy that minimizes "cognitive load" and friction at every touchpoint.12 Modern guests, particularly mobile-first travelers, expect speed, personalization, and a high degree of control over their environment.15

Mobile-First Design and the Guest Control Hub

As of 2025, the mobile application has become the primary "control hub" for the modern guest.15 For example, the Marriott Bonvoy app enables guests to bypass the front desk entirely by checking in remotely and using their smartphone as a digital key.35

Successful mobile UX design in hospitality adheres to several critical principles:

• Minimalist Navigation: Essential actions, such as mobile check-in, room access, and requesting amenities (e.g., towels or a gym pass), should be accessible within two taps of the home screen.35
• Visual Reassurance: The app should use clear icons, colors, and microcopy to convey the status of the guest's stay (e.g., "Your room is ready" or "Your key is active").35
• High-Resolution Content: Because hotels sell an experience, the use of professional, high-quality photography and immersive maps is essential for guiding guest decisions and driving ancillary purchases.39

The Strategic Implementation of Self-Service Kiosks

While mobile apps provide off-property convenience, on-property kiosks serve as essential pressure-relief valves during periods of high volume.12 A well-designed kiosk should not attempt to replicate the full complexity of a front desk but should instead focus on doing a few things reliably, such as issuing keycards and processing payments.33

The physical placement of kiosks is as important as the digital interface. Kiosks should be located in well-lit, accessible areas where staff can provide "triage" support if necessary, a hybrid model that blends automation with human hospitality.12 Designers must also account for environmental constraints, such as screen glare from direct sunlight or the height requirements for wheelchair accessibility.33

UX Feature	Mobile App Strategy	Kiosk Strategy
Onboarding	Frictionless enrollment in loyalty programs with minimal fields.	Rapid, step-by-step wizard for immediate check-in. 43
Interactivity	Haptic feedback and native animations for a premium feel.	Large, touch-friendly buttons (min 44x44 pixels) and auditory cues. 33
Personalization	Targeted promotions based on historical stay data.	Telemetry-driven upsells presented during the check-in flow. 12
Accessibility	Native screen reader compatibility and dynamic text sizing.	Physical "wheelchair mode" and adjustable UI height. 34

Operational Impact and Return on Investment (ROI)

The deployment of integrated, user-centric POS applications is driven by quantifiable economic benefits that impact both the top and bottom lines of a hospitality business.2 These benefits are typically categorized into operational efficiency gains, enhanced guest satisfaction scores, and revenue acceleration through automated upselling.2

Pillar 1: Operational Efficiency and Labor Optimization

Automation is the primary mechanism for driving operational efficiency.11 When a PMS and POS are integrated, the property eliminates the need for manual data transfer between departments, which significantly reduces the administrative workload on front desk and accounting teams.2

• Reduced Labor Costs: By automating routine tasks such as check-in, check-out, and charge posting, properties can operate with leaner teams without sacrificing service quality.15
• Improved Accuracy: Automation minimizes the risk of human error in financial recording, which reduces the time spent on "service recovery" for billing disputes.2
• Faster Room Turnaround: Integrated housekeeping modules notify staff the moment a guest completes a digital check-out, allowing for faster cleaning cycles and potentially increasing occupancy during peak demand.13

Pillar 2: Guest Satisfaction and Net Promoter Score (NPS)

The arrival and departure processes are critical moments that define a guest's perception of a hotel.12 Research indicates that guests from the United States reach a "breaking point" in satisfaction after waiting more than five minutes in line, resulting in a 47% decrease in guest satisfaction scores.53 Integrated applications mitigate this by offering guests the choice to skip the line entirely.15

The ability to recognize guests and their preferences across all outlets through an integrated PMS-POS ecosystem leads to a more personalized stay.2 Properties that provide these tailored experiences report a 20–25% increase in repeat bookings, demonstrating the direct link between user-centric technology and long-term loyalty.48

Pillar 3: Revenue Acceleration and Upselling

The integration of POS and PMS data creates a powerful engine for upselling ancillary services.2 Because the system "knows" the guest's profile and current stay details, it can present relevant offers at the moment of highest intent.15

• Timely Promotions: A guest checking in via their mobile device may be nudged with an offer for a discounted spa treatment or a gym pass upgrade specifically for the dates of their stay.15
• Incremental Spend: Frictionless "charge-to-room" functionality encourages guests to utilize on-site amenities because they do not have to "re-authenticate" or present physical payment at every outlet.2
• Dynamic Pricing: Revenue management systems (RMS) can link with the integrated ecosystem to dynamically adjust the price of ancillary services based on occupancy, season, or competitor behavior.48

ROI Case Study: Automated Room Upselling

The financial viability of guest-facing applications can be illustrated through a standard ROI model for a 200-room hotel.47 If the implementation of a guest service app costs $25,000 in its first year (including SaaS fees, hardware for key dispensing, and integration costs), the property can recoup this investment by automating just a small fraction of potential upsells.47

Metric	Estimated Value
Annual Implementation Cost	$25,000 47
Typical Suite Upgrade Fee	$40 per night 47
Required Upgrades to Break Even	1.7 per day 47
Anticipated Adoption Rate	1 in 5 guests (20%) 47
Potential Net Margin (Year 1)	$40,000+ (assuming 3 upgrades/day) 47

This model demonstrates that user-centric applications are not merely an expense but a strategic revenue-generating tool that can pay for itself within the first 12 months of operation.47

Market Landscape: Leading Solutions and Architectures in 2025

The market for user-centric hospitality POS applications is diverse, with providers catering to various segments, from global enterprise chains to small independent boutique properties.14

Enterprise Systems: Oracle OPERA Cloud

Oracle OPERA remains the industry standard for large-scale enterprise operations.14 Running on Oracle Cloud Infrastructure (OCI), OPERA Cloud provides deep functional depth, including dedicated modules for Sales and Event Management, Casino Technology, and Food and Beverage (via the MICROS Simphony POS platform).14 Its primary differentiator is the Oracle Hospitality Integration Platform (OHIP), which offers over 2,000 REST APIs, providing large chains with unparalleled control and configurability over their guest-facing applications.56

Cloud-Native Innovation: Mews

Mews has emerged as a major disruptor by focusing on an "API-first" and "mobile-first" philosophy.50 Mews distinguishes itself through an open, cloud-native platform with over 1,000 integrations in its marketplace, often with no integration fees.56 This approach allows tech-forward boutique brands to build truly customized tech stacks without the "integration headaches" associated with legacy systems.17

All-in-One Solutions: Cloudbeds and StayNTouch

For independent hotels and smaller groups, Cloudbeds provides a unified platform that combines PMS, Channel Manager, and Booking Engine functionality into a single ecosystem.55 StayNTouch, a mobile-first champion, enables hotel staff to serve guests anywhere on the property using tablets, effectively "line-busting" the traditional front desk queue.45

Provider	Core Market	Architectural Strength	Key User-Centric Feature
Oracle OPERA	Global Enterprise / Resorts	Functional depth and global compliance.	Granular multi-property control via OHIP. 14
Mews	Tech-Forward Boutique / Groups	Open API and automated workflows.	Zero integration fees for marketplace tools. 55
Cloudbeds	Independents / Hostels	Unified "all-in-one" platform.	Commission-free direct booking engine. 56
Agilysys	Casinos / Large Resorts	Deep ancillary service integration.	Itinerary management across F&B, Spa, and Golf. 45
StayNTouch	Modern Boutique / Serviced Apts	100% Mobile-first cloud operations.	Staff mobility for lobby-based check-in. 45

Integration Scenarios and Implementation Strategies

The process of implementing a user-centric POS-PMS integration varies depending on the property's existing technology stack.3

1. Greenfield Deployment: For properties with no existing management software, the most efficient approach is to select a PMS that offers an integrated POS module "out of the box".3 This ensures frictionless connectivity and a single point of support for all billing and reservation functions.3
2. Modular Enhancement: Properties with an established PMS can add a standalone POS platform that offers pre-built, "certified" integrations.3 If a pre-built integration is unavailable, developers must use the PMS's API (such as OHIP or Mews Connector API) to establish a custom two-way data exchange.3
3. Modernization of Legacy Systems: Many hotels operate on outdated software that lacks modern API capabilities.3 Modernizing these systems—often by moving to a cloud-based PMS—is the prerequisite for launching mobile guest apps and digital key technologies.3

Best Practices for Technical Integration

• Audit Current Workflows: Before selecting a system, hoteliers should audit their current PMS, POS, and CRM usage to identify data silos and bottlenecks where manual workarounds frequently occur.17
• Data Mapping and Integrity: Conduct thorough data mapping to ensure that financial transaction codes, market codes, and guest details flow smoothly between systems without duplication or error.2
• API Performance Testing: Prior to launch, properties must conduct rigorous testing of crucial processes, such as room changes, payment reversals, and keycard issuance, to ensure the integration remains performant during peak hours.2

Emerging Trends: Subscription Models and Causal AI

The horizon of hospitality technology is defined by the move toward "Experience-as-a-Service" and the utilization of data for predictive service delivery.52

The Rise of Subscription-Based Travel

Inspired by the success of subscription giants like Netflix and Peloton, hoteliers are increasingly exploring recurring revenue models.52

• Corporate and Nomad Passes: Brands like CitizenM and Selina offer subscription programs that allow digital nomads to access rooms and workspaces for a flat monthly or annual fee.59
• Amenity Subscriptions: Some properties are unbundling their services, offering subscriptions for gym memberships, spa access, or premium streaming content (e.g., HBO Max) that are managed through the guest-facing application.52
• Predictable Cash Flow: For the hotelier, these models provide year-round revenue stability, reducing the impact of seasonal occupancy swings.59

AI-Powered Personalization and Predictive Analytics

The integration of PMS and POS systems provides the massive datasets required to train effective Artificial Intelligence (AI) models.2

• Causal AI for Upselling: Modern systems are moving beyond simple correlations to "causal AI," which understands the drivers of guest behavior.55 For example, a system may identify that guests who purchase a gym pass are 40% more likely to order a high-protein room service breakfast, allowing the app to proactively present that offer immediately after the gym entry is logged.45
• Generative AI Concierge: Platforms like Revinate Ivy utilize generative AI to handle routine guest inquiries via SMS, such as "Can I get a late checkout?" or "What is the Wi-Fi password?".60 This technology provides instant responses 24/7 without requiring additional front desk staffing.60
• Sentiment Analysis: Advanced guest experience software can analyze real-time feedback from in-app surveys or social media mentions, enabling managers to perform proactive "service recovery" before a guest even checks out.30

The Future of the User-Centric Hospitality Ecosystem

The integration of user-centric Point of Sale applications with Property Management Systems represents the definitive evolution of hospitality from a collection of fragmented services into a unified, frictionless ecosystem.1 By reducing transactional friction and empowering guests with mobile control over their journey, hoteliers can unlock significant new revenue streams through automated upselling and enhanced guest loyalty.4

As the industry continues to adopt API-first architectures and standardization protocols like HTNG Express, the barrier to entry for innovative, niche services will continue to fall.17 The properties that succeed in the coming decade will be those that view technology not merely as a tool for operational efficiency, but as an essential enabler of the human touch that defines exceptional hospitality.2 The synergy of deep technical integration, thoughtful UX design, and data-driven personalization will remain the primary competitive differentiator in an increasingly digital world.7

Works cited

1. What Is A POS System? | Oracle United Arab Emirates, accessed February 11, 2026, https://www.oracle.com/ae/food-beverage/what-is-pos/
2. 6 Ways Hotels Can Benefit from Integrated PMS and POS Systems - Evention LLC, accessed February 11, 2026, https://eventionllc.com/blog/hotel-pms-pos-integration
3. Hotel POS Systems: Types, Features, Integrations - AltexSoft, accessed February 11, 2026, https://www.altexsoft.com/blog/pos-hotels/
4. Hotel POS and PMS Systems: How to Elevate Your Guest Experiences | SkyTab, accessed February 11, 2026, https://www.skytab.com/blog/hotel-pos-and-pms-systems
5. Room Charge | Square App Marketplace, accessed February 11, 2026, https://squareup.com/us/en/app-marketplace/app/room-charge
6. What Is a Hotel Property Management System (PMS): Complete G - AltexSoft, accessed February 11, 2026, https://www.altexsoft.com/blog/hotel-property-management-systems-products-and-features/
7. Building a Guest-Centric System for Enhanced Hospitality Experiences, accessed February 11, 2026, https://hospitality.institute/bha107/guest-centric-system-hospitality-experiences/
8. Guest-Centric Approach: Definition & Examples | Vaia, accessed February 11, 2026, https://www.vaia.com/en-us/explanations/hospitality-and-tourism/guest-services-and-experience/guest-centric-approach/
9. How to embrace a guest-centric approach in your hotel - Mews, accessed February 11, 2026, https://www.mews.com/en/blog/guest-centric-hotels
10. What Is a PMS in Hotels? Types, Features, and Benefits - Swiss Hotel Management School, accessed February 11, 2026, https://www.shms.com/en/news/pms-in-hotels/
11. What Does POS System Stand For and How Can It Help Grow Your Business? | Arryved, accessed February 11, 2026, https://arryved.com/point-of-sale/what-does-pos-system-stand-for/
12. 7 Hotel Guest Experience Best Practices That Improve Guest Satisfaction - Evoke Creative, accessed February 11, 2026, https://www.evoke-creative.com/blog/7-hotel-guest-experience-best-practices-that-improve-guest-satisfaction
13. PMS Integration: How It Works For Hotels - Priority Software, accessed February 11, 2026, https://www.priority-software.com/resources/hotel-pms-integration/
14. Hotel PMS and Hotel POS Solutions | Hospitality - Oracle, accessed February 11, 2026, https://www.oracle.com/hospitality/hotel-property-management/
15. Hospitality App Development with Top Must Have Features | TechMagic, accessed February 11, 2026, https://www.techmagic.co/blog/hospitality-app-development
16. How Hotel PMS Integration Works - roommaster, accessed February 11, 2026, https://www.roommaster.com/blog/hotel-pms-integration
17. Hotel Tech Migration: A Practical Guide to API-First Systems - FHA-Food & Beverage, accessed February 11, 2026, https://www.foodnhotelasia.com/blog/horeca/hotel-tech-migration-api-first-systems/
18. PMS Data Integration for Third-Party Apps - AltexSoft, accessed February 11, 2026, https://www.altexsoft.com/blog/pms-data-integration/
19. HTNG Express PMS Integration Spec. V1.0, accessed February 11, 2026, https://htng.stoplight.io/docs/htng-express-pms-integrations/branches/main/72b66de24898e-htng-express-pms-integration-spec-v1-0
20. What is a Hotel PMS Integration and How does It Work? - HotelSmarters, accessed February 11, 2026, https://hotelsmarters.com/blog/hotel-pms-integration
21. How Hotel Booking Software Works: Architecture Flow and Key Modules, accessed February 11, 2026, https://phptravels.com/blog/how-hotel-booking-software-works-architecture-flow-and-key-modules
22. Hospitality payment processing | Stripe, accessed February 11, 2026, https://stripe.com/en-be/resources/more/hospitality-payment-processing
23. The Ultimate Guide to Streamlined Hotel Payment Processing - Tab, accessed February 11, 2026, https://business.tab.travel/blog/the-ultimate-guide-to-streamlined-hotel-payment-processing
24. Oracle Hospitality Integration Platform - Payments — Authorizations and Settlements, accessed February 11, 2026, https://docs.oracle.com/en/industries/hospitality/integration-platform/pasig/G29727_02.pdf
25. Oracle Hospitality Integration Platform - Property Systems — Posting Charges, accessed February 11, 2026, https://docs.oracle.com/en/industries/hospitality/integration-platform/pcpig/G29724_02.pdf
26. 2 APIs and Operations - Oracle Help Center, accessed February 11, 2026, https://docs.oracle.com/en/industries/hospitality/integration-platform/ifcig/c_apis_and_operations.htm
27. open-api-docs/connector-api/use-cases/guest-technology.md at ..., accessed February 11, 2026, https://github.com/MewsSystems/open-api-docs/blob/main/connector-api/use-cases/guest-technology.md
28. Post Simple Charges - Oracle Help Center, accessed February 11, 2026, https://docs.oracle.com/en/industries/hospitality/integration-platform/pcpig/t_post_simple_charges.htm
29. ORACLE Hospitality OPERA Cloud Rest API Workflows Copy | Documentation - Postman, accessed February 11, 2026, https://www.postman.com/cloudy-firefly-293218/documentation/23267234-1abc112a-9548-47e1-97b2-121e4751ec84?entity=request-23267234-e1192d96-24ac-48fa-b644-777682030b6b
30. Top 10 Hotel Guest Experience Software for 2025 - Guestara, accessed February 11, 2026, https://www.guestara.com/post/top-hotel-guest-experience-software
31. HTNG Express PMS Workgroup Phase II - AHLA, accessed February 11, 2026, https://www.ahla.com/htng-express-pms-workgroup
32. HTNG Technical Specifications - AHLA, accessed February 11, 2026, https://www.ahla.com/htng-technical-specifications?page=1
33. Common Challenges in UX Design of Self-Service Kiosks - Wavetec, accessed February 11, 2026, https://www.wavetec.com/blog/challenges-in-ux-design-of-self-service-kiosks/
34. Effective UX UI Design for Self Service Kiosks: Best Practices & Tips - FLYX, accessed February 11, 2026, https://www.flyx.cloud/en/blog/effective-ux-ui-design-for-self-service-kiosks-best-practices-tips/
35. Frictionless UX in Hospitality: What Marriott's Mobile Key Experience Gets Right - Medium, accessed February 11, 2026, https://medium.com/@blessingokpala/frictionless-ux-in-hospitality-what-marriotts-mobile-key-experience-gets-right-c977b2fd2983
36. How Hilton's Tech Innovations Deliver Frictionless Travel - Stories From Hilton, accessed February 11, 2026, https://stories.hilton.com/innovation/hiltons-consumer-centric-tech-innovations-delivering-frictionless-travel-experience
37. Unlocking Seamless Stays: Marriott's Digital Transformation In APAC, accessed February 11, 2026, https://digitaltravelapac.wbresearch.com/blog/unlocking-seamless-stays-marriotts-digital-transformation-in-apac
38. Elevate Hotel App UX for Luxury Users: Best Practices for Success - Finesse Group, accessed February 11, 2026, https://byfinessegroup.com/blog/elevate-hotel-app-ux-for-luxury-users-best-practices-for-success/
39. 10 Best Practices for Hotel Website Design & Development - The Orange Studio, accessed February 11, 2026, https://www.theorangestudio.com/news/10-best-practices-hotel-websites
40. Hotel Booking App: UX Case Study - Sylvie Garner, accessed February 11, 2026, https://sylviegarner.com/portfolio/hotel-booking-app-ux-case-study/
41. Hilton Honors Case Study | Google Cloud, accessed February 11, 2026, https://cloud.google.com/customers/hilton-honors
42. How Mobile Check-In and Self-Serve Kiosks Enhance Guest Experience - Singenuity, accessed February 11, 2026, https://singenuity.com/blog/how-mobile-check-in-and-self-serve-kiosks-enhance-guest-experience
43. The 2025 Complete Guide to the Best Hotel Self Check In Kiosk - TouchWo, accessed February 11, 2026, https://touchwo.com/hotel-self-check-in-kiosk/
44. Case Study Marriott Bonvoy - Formulate, accessed February 11, 2026, https://www.formulates.io/case-study/case-study-marriott-bonvoy
45. Property Management System for Hotels & Resorts - Agilysys PMS, accessed February 11, 2026, https://www.agilysys.com/en/products/pms/
46. accessed February 11, 2026, https://eventionllc.com/blog/hotel-pms-pos-integration#:~:text=Integrating%20the%20PMS%20and%20POS,payments%2C%20and%20increased%20upselling%20opportunities.
47. ROI on your Guest App Investment! - Stayntouch, accessed February 11, 2026, https://www.stayntouch.com/blog/roi-on-your-guest-app-investment/
48. Top 7 PMS Integration Features for Hotels - Switch Solutions, accessed February 11, 2026, https://switchhotelsolutions.com.au/top-7-pms-integration-features-for-hotels/
49. Top Hospitality Software Solutions with ROI Insights for 2026 - Valuecore, accessed February 11, 2026, https://valuecore.ai/valuehub/category/hospitality_software
50. Hotel Guest Experience Software: Top 7 Solutions - TechMagic, accessed February 11, 2026, https://www.techmagic.co/blog/hotel-guest-experience-software
51. Case Study: How Hospitality Businesses Achieved Success with System Integration, accessed February 11, 2026, https://www.reachware.com/blog/case-study-how-hospitality-businesses-achieved-success-with-system-integration
52. The Rise of Subscription Service Models - Today's Hotelier, accessed February 11, 2026, https://todayshotelier.com/2025/08/the-rise-of-subscription-service-models/
53. How Hilton Honors' Digital App Creates Seamless Customer Experiences, accessed February 11, 2026, https://www.anderssorman-nilsson.com/blog/how-hiltons-digital-app-creates-seamless-customer-experiences
54. Hotel Ancillary Services: Boost Revenue Beyond Room Nights - AxisRooms Blogs, accessed February 11, 2026, https://blog.axisrooms.com/hotel-ancillary-services/
55. The 10 Best Hospitality Management Software of 2025 - ChecklistGuro, accessed February 11, 2026, https://checklistguro.com/blog/the-10-best-hospitality-management-software-of-2025
56. The Top 5 Modern PMS Providers for Hotels in 2025 - Event Temple, accessed February 11, 2026, https://www.eventtemple.com/blog/the-top-5-modern-pms-providers-for-hotels-in-2025
57. Changing the Game in Hospitality Integrations - Oracle, accessed February 11, 2026, https://www.oracle.com/hospitality/integration-platform/changing-the-game-in-hospitality-integrations/
58. Hospitality API for Hotels | Mews PMS, accessed February 11, 2026, https://www.mews.com/en/products/api
59. Is Subscription-Based Travel the Future of Hospitality Revenue - Userguest, accessed February 11, 2026, https://userguest.com/is-subscription-based-travel-the-future-of-hospitality-revenue/
60. Best Hotel Concierge Software: A Hotelier's Guide to Guest Messaging - Revinate, accessed February 11, 2026, https://www.revinate.com/blog/best-hotel-concierge-software-guide/
61. How Marriott Used Market Research to Enhance Guest Experience and Expand Its Global Reach, accessed February 11, 2026, https://www.cognitivemarketresearch.com/blog/how-marriott-used-market-research-to-enhance-guest-experience-and-expand-its-global-reach