# Overview

- [What is coherence?](/1.0/overview/what-is-coherence.md)
- [How does coherence work?](/1.0/overview/how-does-coherence-work.md)
- [Rooms and Worlds](/1.0/overview/rooms-and-worlds.md): coherence provides two types of online replication services: Rooms and Worlds. Read about the different uses cases for each.
- [Features and Roadmap](/1.0/overview/roadmap.md)
- [Release Notes](/1.0/overview/release-notes.md): Read about new features, important changes and fixes for version 1.0
- [Known Issues and Troubleshooting](/1.0/overview/troubleshooting.md): Tips on how to handle common problems