> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/~/revisions/AMiYziCllTKB2y2lmONY/serverless/api-gateway/overview/use-cases.md).

# Use Cases

Based on IONOS API Gateway features and benefits, the following use cases are derived that meet your business demands:

* **Routing Requests to Appropriate Backend Services:** By routing requests to the appropriate backend services, API Gateways ensure that incoming API requests are directed to the correct destinations, enabling efficient communication and seamless interaction between clients and backend systems.
* **Managing and Securing API Access:** This will be supported in later versions.
* **Monitoring and Logging API Traffic:** By actively monitoring and logging API traffic within an API Gateway, you can enhance operational visibility, ensure system reliability, optimize performance, and promptly address issues to deliver a seamless and secure API experience.
* **Serverless Applications:** Offering a flexible and efficient way to build and manage APIs in a cloud-native environment. By leveraging the benefits of serverless computing, you can focus on developing your application logic.
* **Legacy System Modernization:** API gateways can expose legacy systems as modern APIs. This allows newer applications to interact with older systems without requiring extensive modifications to the legacy codebase.
* **Mobile and Web Applications:** API Gateways provide a secure and scalable way to handle API requests from mobile and web applications. They can also implement features like rate limiting and caching, which can improve their performance.
* **Internet of Things (IoT):** API Gateways can manage many API requests generated by IoT devices and implement security measures to protect them from unauthorized access.
* **B2B Integrations:** It is possible to facilitate secure and reliable business communication. API Gateways can be used to manage access to APIs, enforce security policies, and monitor API usage.
* **Transforming API Protocols and Data Formats:** API Gateways can mediate between protocols (for example, REST to SOAP) and data formats, enabling seamless communication between diverse systems. **S3 Static Web Hosting:** Using IONOS S3 for static web hosting with an API Gateway involves allowing your API Gateway to serve or interact with the static content stored in an IONOS S3 bucket.


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