Amazon DocumentDB (with MongoDB compatibility) now supports in-place major version upgrades (MVU) directly from engine versions 3.6 and 4.0 to version 8.0. This upgrade capability removes the need for intermediate version upgrades and allows you to upgrade your version 3.6 or 4.0 clusters while preserving existing data, configurations, and cluster settings. Upgrading to version 8.0 provides access to the latest security patches, performance improvements, and new developer capabilities.