For security reasons, I prefer MongoDB Atlas. It supports role-based access control, so you have an entity for each individual.
MongoDB Atlas offers high scalability and stability, efficiently handling large data across zones. The solution provides seamless integration, high availability, and zero maintenance in its cloud-based system. Although it features automatic sharding and flexible schemaless architecture, challenges exist, such as high cost and inadequate data import/export. Additionally, MongoDB Atlas' technical support and integration with services like AWS need enhancement, and issues persist with indexing and query performance.