Here is an interesting dive into the history of ABINIT, broken down by its major developmental eras.
Once development is complete, changes from different branches are merged back into the main trunk, with the EME identifying potential conflicts. 4. Impact Analysis and Lineage ab initio version history
Ab Initio expanded the EME into a more comprehensive Metadata Hub, allowing non-technical users to see data lineage and business glossaries. Here is an interesting dive into the history
Upgrading Ab Initio is a significant undertaking because the software is often used for "mission-critical" systems (like credit card processing). bug fixes vs. new feature development).
This allows parallel development on the same codebase (e.g., bug fixes vs. new feature development).

