Open APIs in hotels: The key to successful digitalisation
Some hotels invest heavily in digitalisation yet still fail to realise their full potential. This is often not due to the shortcomings of individual software systems, but rather to how they interact with one another. If information does not flow automatically between the PMS, CRM, channel management system, guest communication system and revenue management system, this results in manual tasks, duplicate data entry and unnecessary data silos.
Open APIs (Application Programming Interfaces) provide the technical foundation for ensuring that data is reliably exchanged between different systems and that digital processes integrate seamlessly.
In this article, you’ll learn why open interfaces are often more important for hotel digitalisation than individual functions, what benefits they offer staff and guests, and what hotels should look out for when selecting new software.
What is an API? – Definition
An API (Application Programming Interface) is a standardised interface through which software solutions can exchange information. Acting as a kind of translator between different systems, it ensures that data automatically reaches where it is needed.
Here’s an example from everyday hotel life: a guest books a room via the hotel’s website. Ideally, the booking details are automatically transmitted via open APIs to the property management system (PMS), the channel manager, the guest communication system or the revenue management system. All the applications involved access the same information without staff having to transfer data manually or enter it multiple times.
In practice, however, this exchange often does not run quite so smoothly.
Why many hotels fail to operate efficiently despite modern software
In recent years, many hotels have gradually driven forward their digitalisation and installed software solutions – ranging from property management systems, through CRM and channel managers, to tools for guest communication, housekeeping or revenue management. If these do not work together seamlessly, major challenges arise.
A lack of robust interfaces leads to data silos. Information is stored across multiple systems, has to be transferred manually or maintained repeatedly, and is not always available to staff in its most up-to-date form.
This has an impact on two levels:
Firstly, it increases internal workload.
Secondly, it compromises the guest experience – for example, when a guest has to provide the same information several times or receives conflicting messages.
Furthermore, with every additional system, the complexity of the entire IT landscape increases. New integrations must be set up and maintained, updates must be coordinated, and data flows must be regularly reviewed.
Hotel API integration as a key success factor
Even the most powerful software only delivers its full benefits if it works reliably with other applications. Open APIs provide the technical foundation for connecting hotel systems.
Greater flexibility instead of vendor lock-in
Hotels are constantly developing their IT infrastructure to keep pace with new requirements. Open APIs facilitate this process, as they make it easier to integrate new systems and replace existing ones.
This reduces dependence on individual suppliers. Hotels remain flexible and can adapt their software infrastructure gradually to new requirements.
Automation instead of manual work
Many processes in a hotel follow the same pattern every day. If the systems involved are interconnected, these workflows can be largely automated.
This saves time, reduces sources of error and relieves staff of repetitive routine tasks. At the same time, up-to-date information is available to all relevant departments without the need for additional steps.
Consistent data rather than data silos
Guest data, bookings and preferences can be accessed across all systems and do not need to be maintained multiple times.
A shared database improves collaboration between departments and lays the groundwork for personalised communication and well-informed decisions.
Easy scalability instead of complex system changes
AI applications, digital services and new automation solutions can be integrated much more easily if existing systems have open interfaces.
Open interfaces enable hotels to continue developing their digitalisation in the long term without having to rebuild their entire IT landscape.
Case study: The digital guest journey through interconnected systems
From the guest’s perspective, a hotel stay unfolds as a seamless journey – from booking to departure. Behind the scenes, however, numerous systems are often involved, exchanging information with one another. Open APIs transform many individual steps into a continuous process.
Before arrival, booking data is transferred from the booking engine or channel manager to the PMS. At the same time, the guest communications system can automatically send a booking confirmation, information about the stay or a digital check-in.
During the stay, various departments access the same information. The front office is aware of the current booking status, housekeeping can view arrivals and departures in real time, and additional services can be allocated directly to the guest. Changes do not need to be entered multiple times but are immediately available to all systems involved.
After departure, invoices are generated, feedback requests are sent out and relevant information is transferred to CRM or marketing systems. This creates seamless communication that continues to support the guest even after their stay.
The better these systems are interconnected, the fewer manual steps are required. At the same time, guests benefit from faster processes, consistent information and a hassle-free stay.
Open interfaces form the basis for the use of artificial intelligence
Artificial intelligence is also a major trend in the hospitality industry. AI tools assist with guest communication and price optimisation, or analyse operational metrics. However, their potential depends on one crucial factor: access to up-to-date and complete data.
For AI to work effectively, it must consolidate information from various systems. For example, it requires booking data from the PMS, guest information from the CRM, or up-to-date availability from the revenue management system. If this data is linked via open APIs, it can be utilised and analysed in real time.
This opens up new possibilities: AI can generate personalised recommendations, automatically respond to guest enquiries or support staff in operational decision-making. In future, AI agents (Agentic AI) will increasingly take on tasks independently – such as processing bookings, offering additional services or coordinating internal processes.
The better hotels integrate their systems today, the easier it will be to deploy AI applications in the future. With open APIs, new technologies will not be held back by isolated data sets or a lack of interfaces.
How LIKE MAGIC intelligently connects hotel systems
Open APIs deliver their greatest benefit when they form part of a well-thought-out platform strategy. Rather than simply connecting individual applications, this creates a system landscape in which data is centrally available and processes can be managed across the board. LIKE MAGIC pursues this approach with an API-first architecture:
The platform can be connected to existing hotel systems via open interfaces; for example, to the property management system (PMS), a CRM, a revenue management system or other specialised applications. This allows hotels to continue using their existing software landscape and expand it gradually as required, rather than having to replace it entirely.
The platform consolidates information from the connected systems into a single database. This facilitates the automation of recurring processes, reduces data silos and lays the foundation for a consistent guest journey – from booking through to the stay and communication after departure.
The focus is on ensuring that data and processes interlock reliably and that hotels can flexibly develop their system landscape. The result is a digital infrastructure that adapts to new requirements rather than holding them back.
What hotels should look for when selecting new software
The range of functions offered by a software solution naturally plays an important role in the selection process. However, it is at least as crucial to consider how well a solution integrates into the existing IT landscape and supports future requirements. Anyone investing in new hotel software today should therefore assess its integration capabilities.
The following questions can help with this assessment:
Does the software have open APIs? This makes it easier to integrate existing and future systems.
Is the API well documented? Transparent documentation shortens implementation times.
Which systems are already supported? Existing integrations with PMS, CRM or revenue management systems reduce the effort required for implementation.
Will the hotel’s own data remain accessible? Hotels should be able to access their data at any time and use it in other applications.
Is the ecosystem open to extensions? A flexible software architecture makes it easier to deploy new technologies or additional applications.
Taking these points into account lays the foundation for successful software deployment today and tomorrow.
Conclusion: The future belongs to connected hotels
Successful digitalisation in hotels increasingly depends on how well systems work together and how smoothly information flows between them. Open APIs make it possible to intelligently link data, processes and applications.
Staff benefit from more efficient workflows and less manual labour. Guests enjoy a smoother stay because information is consistently available across all touchpoints and digital services interlock seamlessly.
Integration capability is therefore a key criterion when selecting software. An open system architecture creates the conditions for integrating existing solutions, flexibly incorporating new technologies and advancing digitalisation step by step.
Open APIs are far more than just a technical detail. They form the foundation of future-proof hotel IT.
FAQs about APIs and hotel digitalisation
What is an API in a hotel context?
An API (Application Programming Interface) is a standardised interface through which different hotel systems can automatically exchange information. A hospitality API connects, for example, a property management system (PMS) with a CRM, a booking engine or a guest communication solution. This means that data does not have to be entered multiple times or transferred manually.
Why are APIs important for hotels?
APIs ensure that data flows automatically between different applications. This reduces manual work, prevents errors and lays the foundation for efficient processes. Open APIs in hotels also make it possible to flexibly extend existing systems with new software.
How do hotels benefit from open interfaces?
Open interfaces improve collaboration between different systems and create a shared database. This enables processes to be automated, information to be accessed centrally, and guests to be looked after consistently across all touchpoints. At the same time, hotel API integrations make it easier to introduce new digital services.
Which hotel systems should be connected to one another?
The most important integrations include the property management system (PMS), CRM, channel manager, booking engine, revenue management system, guest communication, and payment and marketing solutions. The better these hotel systems can be connected, the more efficiently information can be utilised and processes automated.
What are the risks of closed systems?
Closed systems make it difficult to exchange data with other applications. This leads to data silos, additional maintenance work and greater dependence on individual providers. At the same time, it becomes more difficult to integrate new software or technologies into the existing IT landscape.
How do APIs support automation in hotels?
APIs automatically transfer information between different systems. This enables booking confirmations to be sent, housekeeping tasks to be created or additional services to be offered without staff having to enter data multiple times. Effective integration of hotel software provides the technical foundation for such automated processes.
What role do APIs play in guest communication?
APIs ensure that all relevant guest data is available at the right time. This allows booking confirmations, pre-stay messages, digital check-ins or feedback requests to be sent automatically and in a personalised manner. At the same time, staff have access to up-to-date information at all times.
Why are APIs important for AI applications?
AI applications require up-to-date and complete data to function reliably. APIs connect the necessary systems and provide information in real time . This enables hotels to use AI, for example, for personalised communication, price optimisation or automated service processes.
What is an API-first approach?
An API-first approach means that software is developed from the outset in such a way that it can be easily connected to other applications. Instead of isolated, stand-alone solutions, this creates an open system architecture that facilitates data exchange and supports future expansions.
How can you identify software that is suitable for integration?
Software that can be integrated features open APIs, good technical documentation and existing connections to common hotel systems. When making a selection, it is also worth checking which integrations are already available and how flexibly new applications can be integrated.
Can existing hotel systems be integrated at a later stage?
In many cases, yes. If the solutions in use have open APIs or suitable interfaces, they can often be connected to one another at a later stage. However, whether and to what extent this is possible depends on the specific software and its integration capabilities.
How does a hotel get started with an API-based digitalisation strategy?
The first step is to analyse the existing software landscape and identify data silos or manual processes. Hoteliers should then check which applications already have open interfaces and how further API integrations can be implemented step by step within the hotel. This gradually creates a connected and future-proof IT landscape.
