# Overview

- [What is coherence?](/0.7.4/overview/what-is-coherence.md)
- [How does coherence work?](/0.7.4/overview/how-does-coherence-work.md)
- [Features and Roadmap](/0.7.4/overview/roadmap.md)
- [Rooms and Worlds](/0.7.4/overview/rooms-and-worlds.md): coherence provides two types of online replication services: Rooms and Worlds. Read about the different uses cases for each
- [Requirements](/0.7.4/overview/requirements.md)