This database is a relational database know as DBaaS means database-as-a-service. It is hosted in Azure and falls in the category of PaaS means Platform-as-a-Service. This is the best product for modern cloud applications that use the latest server features, and they also have time constraints in the marketing and development fields.

The SQL database Azure is a completely managed server database engine based on the Azure Enterprise edition with SQL Server. It has a couple of deployment options created on standard software and hardware maintained and hosted by Microsoft.

The two deployment options offered by the SQL database in Azure are:

Single Database – As a single database, it has its own set of resources managed by the Azure SQL server. It is somehow similar to the database in the SQL server. This option is made for the development of modern applications. Available options are serverless and hyper-scale.

Elastic Pool – the elastic pool is a collection of different databases with a shared set of resources. The SQL server also manages these databases. This option is also made for the development of modern applications using the SaaS application pattern. This option is known for providing cost-effective solutions to manage the performances of more than one database with variant patterns.

When using Azure SQL Server, a user can use different built-in functions, and features and those features require some extensive level of configuration. With SQL Database Azure, you stay out of any interruption because of having a pay as you go options. It also comes with some additional features, not SQL Server Azure, like intelligence, availability, and management.

As we discussed above, this product comes in the category of Infrastructure-as-a-Serve (IaaS) and allows users to run the SQL Server Azure in a managed VM means virtual machine in SQL Azure.

It is the best product for applications and migrations that require operation system-level access. The SQL VMs are ready for lifting and shifting for the applications, and t requires fast migration to the cloud with no changes or slight changes. These machines offer administrative controls for SQL Server Azure instances and the operating system for the migration process.

When a user is not interested in buying on-premises SQL Azure Server hardware, the virtual machines offer standard hardware that Microsoft owns. You can also resume or stop the devices when you do not need them.

This product is also developed for migrating the existing apps to Azure. It also allows the users to use the SQL server in a VM to build and test SQL Server applications. SQL VMs give you full administrative rights for SQL Server instant and cloud-based VMs. These abilities allow a user to develop a personalized system for addressing any application's performance and requirements.

This product comes in the category of PaaS, which is Platform-as-a-Service. This product is best for many migrations to the cloud. SQL Azure Managed Instance is a set of user and system databases with many shared resources.

SQL Managed Instance is best for new and existing applications that want to use the SQL Server features and are migrated to the cloud with slight changes. This product also supports the migration of a database from on-premises with relatively less or no modifications. It provides all the benefits of PaaS of the database and adds the available capabilities in SQL Server VMs. The SQL Managed instance instances offer full access to SQL Server, and its features are compatible with migrating the servers to Azure.