Azure Data Studio (ADS) and SQL Server Management Studio (SSMS) are two popular tools for managing and querying Microsoft relational databases. ADS is a lightweight, cross-platform tool that offers a modern editor experience with features like IntelliSense and source control integration. It provides seamless integration with Azure services and is designed to be efficient on less powerful systems. On the other hand, SSMS is an integrated environment for managing any SQL infrastructure, providing graphical tools and script editors for interacting with and manipulating SQL Server databases. While both tools share some similarities, they cater to different needs, with ADS focusing on database development and query creation across multiple platforms, and SSMS specializing in managing SQL Server databases and objects. The choice between the two ultimately depends on individual requirements and preferences, as well as the specific use cases and features that are essential for a particular project or workflow.