We are announcing a new requirement for all builds to use our configuration file version 2. This announcement deprecates builds without a configuration file, as well as version 1 of our configuration file.

Read the Docs will start requiring a .readthedocs.yaml configuration file for all projects in order to build documentation successfully. We will stop supporting builds without explicit configuration, because this creates implicit dependencies that users aren’t aware of. We plan to start failing builds not using configuration file version 2 on September 25, 2023.

Read the Docs is in the process of migrating our primary marketing website to a single site: https://about.readthedocs.com. The new site offers users more information about our products and their features, in a combined presentation of what was previously divided between two websites (Read the Docs Community and Read the Docs for Business). At the same time, the new site will also serve as a single entrypoint for users that are logging in to Read the Docs accounts. There has been a good deal of confusion around our two sites, and this change makes it more clear which site you’re going to.

Importantly, we are keeping both our Community and Business sites separate for logged in users. There are no changes in our commitment to offering free hosting for open source, or the separation of infrastructure for Business customers.