Technology is everywhere in hospitality these days—from the apps your guests use to check in, to the systems behind the scenes making sure rooms are ready, rates are optimized, and staff can do their jobs efficiently. But let’s be honest: all the acronyms and software names can get confusing fast. PMS, RMS, CRS, API… it can feel like learning a new language overnight.

If you’ve ever felt overwhelmed trying to understand which tools do what, you’re not alone. That’s why we put together this handy glossary. Think of it as a quick reference guide you can come back to whenever you need to check what a system does, why it matters, or how it fits into your hotel’s operations.

We’ve included examples from some of the leading vendors in the industry, so you’ll have a practical sense of what’s out there—without getting bogged down in jargon.

Key components of the hotel tech stack

Property Management System (PMS)

The PMS is the foundation of hotel operations, managing reservations, check-in/check-out, room assignments, billing, and housekeeping schedules. Modern PMS platforms often integrate with other systems such as revenue management, POS, and CRM platforms.

Why it matters: A PMS streamlines operations, reduces errors, and provides a central hub for guest data (Mara Solutions).

Examples: Hotelogix, Stayntouch, Infor Hospitality

Revenue Management System (RMS)

RMS platforms use data analytics to optimize room rates and maximize revenue. They analyze booking patterns, market trends, competitor pricing, and local demand to recommend pricing strategies in real time.

Why it matters: RMS helps hotels sell the right room, at the right rate, to the right customer, boosting profitability (Cloudbeds).

Examples: Atomize, Fairmas, Juyo Analytics

Central Reservation System (CRS)

A CRS consolidates reservations from multiple channels—direct bookings, OTAs, global distribution systems (GDS), and corporate clients—into a single platform. This ensures accurate availability, prevents overbooking, and centralizes reservation management.

Why it matters: It provides a single source of truth for bookings, enabling better inventory control and reducing errors (Mara Solutions).

Examples: HotelRunner, Profitroom, Roomnet

Channel Manager

A channel manager synchronizes room availability, rates, and restrictions across all online channels. By automatically updating multiple platforms simultaneously, it reduces errors, prevents double bookings, and saves time for hotel staff.

Why it matters: Ensures accurate pricing and availability on all channels, enhancing revenue and guest trust (Cloudbeds).

Examples: HotelRunner, Profitroom, Triptease

Point of Sale (POS) System

A POS system handles transactions at on-property outlets such as restaurants, bars, spas, or gift shops. Modern POS solutions often integrate with PMS and accounting systems for real-time reporting and accurate billing.

Why it matters: Improves operational efficiency, minimizes errors, and provides seamless guest billing (Mara Solutions).

Examples: IRIS, Adyen, PayOne

Customer Relationship Management (CRM)

CRM software collects and organizes guest data to personalize marketing, loyalty programs, and communications. It allows hotels to segment guests, send tailored offers, and create meaningful engagement before, during, and after a stay.

Why it matters: Personalization increases guest satisfaction, loyalty, and repeat bookings (Viqal).

Examples: Cendyn, dailypoint

Booking Engine

The booking engine is the online tool that enables guests to make reservations directly on the hotel website. Integrated booking engines are often connected to the PMS and CRS, ensuring real-time availability and rates.

Why it matters: Encourages direct bookings, reduces dependency on third-party channels, and improves revenue margins (Cloudbeds).

Examples: HotelRunner, Profitroom, Triptease

Application Programming Interface (API)

APIs are the connectors that allow different software systems to communicate. For instance, a PMS API may share room availability and guest data with a CRM, RMS, or booking engine, creating a more integrated tech ecosystem.

Why it matters: APIs enable interoperability, reduce manual data entry, and facilitate automation across systems (Viqal).

Examples: Infor Hospitality, BeonX, Hotelogix

Business Intelligence (BI) Tools

BI tools collect and analyze operational data from multiple sources, providing dashboards, KPIs, and actionable insights. They help management track performance, optimize revenue, and make strategic decisions.

Why it matters: Converts raw data into insights that improve decision-making and operational efficiency (Skift Research).

Examples: Fairmas, Juyo Analytics, RobosizeME

Revenue Analytics & Reporting Tools

While often part of an RMS or PMS, these tools focus specifically on analyzing revenue performance. Dashboards provide trend analysis, forecasting, and performance benchmarking.

Why it matters: Gives hoteliers a clear understanding of revenue drivers and helps identify opportunities for optimization (Cloudbeds).

Examples: Atomize, Fairmas, Juyo Analytics

Guest Experience & Personalization Tools

From mobile check-in apps to smart room devices, these tools enhance the guest experience and allow hotels to tailor services based on guest preferences, past behavior, and loyalty status.

Why it matters: Personalized experiences drive guest satisfaction, positive reviews, and repeat visits (Mara Solutions).

Examples: Suitepad, chatlyn, Goki/Portal

Housekeeping & Maintenance Management Tools

Digital housekeeping tools track room status, maintenance issues, and staff assignments in real time. They often integrate with the PMS to update room availability automatically.

Why it matters: Improves operational efficiency, reduces guest complaints, and ensures rooms are ready on time (Skift Research).

Examples: Hotelkit, Hotellab

Payment & Finance Solutions

Payment gateways, virtual wallets, and integrated finance tools simplify guest payments and back-office accounting. They often integrate with PMS and POS systems for accurate tracking.

Why it matters: Streamlines revenue collection, improves reporting, and enhances security (Cloudbeds).

Examples: Adyen, PayOne, Plusgrade

Why understanding your tech stack matters

A hotel tech stack is more than just software—it’s a strategic asset. Understanding the role and function of each system allows hoteliers to:

Make informed technology investment decisions
Optimize operations and reduce manual work
Enhance guest satisfaction through personalized experiences
Leverage data to improve decision-making and profitability

With a clear understanding of your stack, you can ensure all systems integrate effectively, maximizing efficiency and ROI across your property.

Keeping this glossary updated

Technology evolves rapidly, and new systems, integrations, and capabilities appear constantly. This glossary is designed to be an evergreen reference, regularly updated to reflect industry developments, ensuring hoteliers always have a practical, up-to-date resource.

Demystifying the hotel tech stack: A glossary for busy hoteliers