Amazon DocumentDB now supports direct major version upgrades to version 8.0, eliminating the need for intermediate version upgrades and preserving existing data, configurations, and cluster settings.[1278673] Amazon Cognito now supports machine-to-machine authorization without a user pool domain, enabling app clients to obtain access tokens for machine-to-machine authorization directly through the AWS SDK, CLI, or API.[1237991] Amazon MSK Connect now supports restarting connectors, allowing for fast recovery for streaming data pipelines and seamless recovery from failures or transient issues.[1274615] Amazon EMR on EKS now supports job run concurrency controls, giving developers fine-grained control over how many job runs execute at once and how many can wait in queue.[1221689]