The new CLI for MongoDB Atlas provides developers with greater flexibility and reduced operational overhead by allowing them to develop locally with implementations of MongoDB Atlas, including Atlas Search and Vector Search, using the Atlas CLI. This enables developers to create full-text search or AI-powered applications without relying on a cloud environment. The CLI also streamlines common tasks such as configuration, connection, and automation, reducing the time spent by developers on repetitive tasks. Additionally, the new features allow developers to manage local indexes for both Search and Vector Search, making it easier to experiment with these features locally before deploying them in production.