DRIVERS-2926: Summary of necessary driver changes Implementation of new Binary subtype 9 including encoding and decoding logic convenience methods to move from sequences of numbers to binary (e.g. from_vector , as_vector ) common json tests in specifications/source/bson-binary-vector/tests along with a test runner, updates to any scripts that sync these tests to the driver repository. additional testing specific to the driver implementation The pull-request of the initial implementation in Python is here: DRIVERS-2926 PYTHON-4577 BSON Binary Vector Subtype Support #1813 Commits for syncing spec/prose tests specifications/source/bson-binary-vector Context for other referenced/linked tickets CLOUDP-221473 is the Atlas Search epic. It contains links to technical design, scope, and much more. Slack channel #bson-binary-vector-type