A search for sql in the Azure portal provides multiple results. I have marked some of them to show the resources that can be used directly for OLTP applications:
![](https://static.packt-cdn.com/products/9781789614503/graphics/assets/b8d377d8-6437-4ced-94e4-e955fc445922.png)
The previous screenshot shows the varied features and options available for creating SQL Server-based databases on Azure.
Again, a quick search for database on the Azure portal provides multiple resources, and the marked ones can be used for OLTP applications:
![](https://static.packt-cdn.com/products/9781789614503/graphics/assets/f8e522f4-5a96-4f96-9649-1c0a6630d9ca.png)
The previous screenshot shows resources provided by Azure that can host data in a variety of databases, including the following:
- MySQL databases
- MariaDB databases
- PostgreSQL databases
- Cosmos DB