The MongoDB Stable API provides a subset of commonly used commands that remain consistent across new database versions, decoupling the application lifecycle from the database lifecycle. This allows customers to upgrade to the latest version without introducing breaking changes to their code base. The MongoDB Rapid Release cadence offers quarterly releases with the latest features for Atlas customers on Dedicated Tier clusters, allowing them to choose between a Major Release track with annual updates or a Rapid Release track with more frequent updates. Customers can opt in to the Rapid Release track to get the latest features from MongoDB, and those who switch tracks will automatically go to the next Rapid Release. The Stable API provides consistency across versions for customers to take advantage of MongoDB's new release cadence.