> For the complete documentation index, see [llms.txt](https://www.pranaypourkar.co.in/the-programmers-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pranaypourkar.co.in/the-programmers-guide/interview-guide/technical/spring-interview-companion/spring-key-concepts/set-1-general.md). # Set 1 - General ## **Does Spring Boot is used only for building Rest APIs?** No, Spring Boot is not only for building REST APIs. While it's true that Spring Boot provides support for building RESTful web services with its embedded HTTP servers and extensive libraries, it's not limited to just that. Spring Boot is a mechanism for auto-configuring a Spring Framework based application. Therefore it can be used for all other items like - * REST APIs for webservices * SOAP based services * Full web application using Spring MVC * Reactive web applications * WebSocket applications * Command line tools * Batch jobs * Swing / JavaFX applications --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://www.pranaypourkar.co.in/the-programmers-guide/interview-guide/technical/spring-interview-companion/spring-key-concepts/set-1-general.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.