Use the MongoDB Atlas Kubernetes Operator to automate and manage Atlas services from your Kubernetes cluster. Kubernetes operators are controllers that extend the Kubernetes API to create, configure, and manage instances of applications or services.
Using the MongoDB Atlas Kubernetes Operator, you have full control over your MongoDB Atlas databases from a single Kubernetes control plane, with a consistent experience across different deployment environments.
Mongosync (the mongosync utility) helps you migrate data between MongoDB clusters across environments, including Atlas, private clouds, public clouds, and on-premises.
MongoDB Atlas can also help with migrations using Live Migrate into Atlas. For more details, see the Documentation