# openEO Documentation
This is the openEO Documentation for API versions 0.4. This version is outdated and got replaced by API version 1.0.
Some useful links to get started:
- Getting started for users
- Getting started for client developers
- Getting started for service providers
- openEO Glossary
- openEO Processes
- openEO UDFs for users
- openEO API
Feel encouraged to use the "User Documentation" and "Developers" menu items for further navigation through the documentation.