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Hypermedia as the Engine of Application State (HATEOAS)

Knowledge Base / Glossary: "Hypermedia as the Engine of Application State (HATEOAS) is a design principle that is often used in RESTful APIs. It states that the client of an API should be able to navigate the API solely through the use of hypermedia links provided in the res..."

Hypermedia as the Engine of Application State (HATEOAS) is a design principle that is often used in RESTful APIs. It states that the client of an API should be able to navigate the API solely through the use of hypermedia links provided in the responses from the server.

In other words, the client should not need to hardcode the URLs of specific resources or actions in order to interact with the API. Instead, it should be able to discover and follow links in the responses from the server to navigate the API.

The main benefit of HATEOAS is that it allows the API to evolve over time without breaking existing clients. If the URL structure of the API changes, the clients will still be able to follow the appropriate links to access the resources they need. This makes the API more flexible and easier to maintain.

HATEOAS is often implemented using the Hypertext Transfer Protocol (HTTP) and the Hypertext Markup Language (HTML). The server includes links to relevant resources and actions in the HTTP headers or the body of the responses, and the client follows these links to navigate the API.

HATEOAS is an important aspect of RESTful APIs and is often used to build APIs that are flexible and easy to maintain. It allows clients to interact with the API without having to hardcode specific URLs, which makes it easier to evolve the API over time.