Database-as-a-service (DBaaS) is a kind of cloud computing. Users do not have to bother about configuring hardware or installing software because the service is hosted/managed. The service provider handles everything relating to database management.
All database types, including NoSQL, MySQL, and PostgreSQL, have database hosting choices. MongoDB Atlas is one example of a scalable NoSQL DBaaS service.
Everything needed to run a database in the cloud is included in the DBaaS subscription, including database provisioning, licencing, support, and maintenance. Developers may leverage cloud-hosted APIs to create new apps that access and manipulate data programmatically. As a result, DBaaS is quite comparable to other SaaS subscription-based cloud products. There is no additional cost as a managed service; you can go right to work extracting value from your data repository.