DRIVERS-3535 : Summary of necessary driver changes Add support for baseBackoffMS to existing client backpressure drivers. Update the manual backpressure support example code for your driver ( DRIVERS-3584 ) in your codebase (if it exists) and in the document to support the new "baseBackoffMS" server error field For the release notes associated with the backpressure v2 change, make sure to communicate: "Improved performance for MongoDB 9.0's Intelligent Workload Management (IWM) by only retrying overload errors when doing so is expected to not worsen server conditions" See d6fc118bd1dd6854fa72f9be0ff5d6a57e8f68e1 Commits for syncing spec/prose tests (and/or refer to an existing language POC if needed) d6fc118bd1dd6854fa72f9be0ff5d6a57e8f68e1 Context for other referenced/linked tickets See DRIVERS-3578 for a follow-up test fix. Drivers are not required to link the IWM landing page information on their initial release notes. These should be retroactively added with DRIVERS-3606 Drivers are not required to reference or block on any IWM Atlas docs links in their in-driver code implementation. API references can be merged into the code base but do not need a prioritized release; they can accompany another release at the team's discretion