# What & Why - [What is Scanner](https://docs.scanner.dev/scanner/what-and-why/readme.md): Scanner is the world’s fastest, easiest, and most scalable Security Data Lake. It lets you keep unlimited logs in your own Amazon S3 buckets and adds hyper fast search, detection, alerts, APIs & more. - [How it Works](https://docs.scanner.dev/scanner/what-and-why/how-it-works.md) - [How Scanner Achieves Fast Queries](https://docs.scanner.dev/scanner/what-and-why/how-it-works/how-scanner-achieves-fast-queries.md) - [Detection Rule Engine](https://docs.scanner.dev/scanner/what-and-why/how-it-works/detection-rule-engine.md) - [Bring Your Own Cloud (BYOC) / Self-Hosted](https://docs.scanner.dev/scanner/what-and-why/how-it-works/bring-your-own-cloud-byoc-self-hosted.md) --- # Agent Instructions: 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: ``` GET https://docs.scanner.dev/scanner/what-and-why.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.