# Overview

> What DS Server is and how it is built: the DocumentProcessing Web API, Document Editor, Document Viewer, OAuth, Core and Classic builds, formats and licensing.

- **Product:** DS Server
- **Section:** Documentation
- **Kind:** Topic
- **Path:** DS Server > Overview
- **Web URL:** https://docs.textcontrol.com/ds-server/overview/
- **LLMs URL:** https://docs.textcontrol.com/ds-server/overview/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/ds-server/overview/llms-full.txt

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## On This Page

- [Find the Right Page](https://docs.textcontrol.com/ds-server/overview/#find-the-right-page)
- [Where to Start](https://docs.textcontrol.com/ds-server/overview/#where-to-start)
- [Pages in This Section](https://docs.textcontrol.com/ds-server/overview/#pages-in-this-section)

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## In This Section

- [Architecture](https://docs.textcontrol.com/ds-server/overview/architecture/llms.txt): How a request reaches DS Server: Kestrel or IIS hosting, ports 5000 and 5001, Admin.db, worker processes, OAuth security profiles, client connections, plugins.
- [Core and Classic](https://docs.textcontrol.com/ds-server/overview/core-classic/llms.txt): Compare the Core build for Linux and Windows with the Classic build for Windows and IIS: Docker images, format limits on Linux, fonts and .NET runtimes.
- [Supported File Formats](https://docs.textcontrol.com/ds-server/overview/file-formats/llms.txt): The formats each DocumentProcessing endpoint accepts and returns: returnFormat values DOCX, PDF, PDF/A, RTF, HTML, image formats and the limits on Linux.
- [Introduction](https://docs.textcontrol.com/ds-server/overview/introduction/llms.txt): DS Server converts, merges and displays documents over HTTP from any language: its parts, typical workflows, the trial and how it compares to .NET Server.
- [Licensing Overview](https://docs.textcontrol.com/ds-server/overview/licensing/llms.txt): How DS Server is licensed per server instance for one year: unlimited developers, royalty-free client libraries, renewal, trial token and trial version.

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## Nearby

- **Previous:** [DS Server](https://docs.textcontrol.com/ds-server/llms.txt)
- **Next:** [Introduction](https://docs.textcontrol.com/ds-server/overview/introduction/llms.txt)