SQL Server is a relational database management system developed by Microsoft. It is designed to store, retrieve, and manage data efficiently, allowing users to create and manage databases. SQL Server uses the Structured Query Language (SQL) for querying and manipulating data, making it a popular choice for businesses and developers. The platform supports various features such as data security, backup and recovery, and performance tuning. It can be used for a wide range of applications, from small-scale projects to large enterprise solutions. Additionally, SQL Server integrates well with other Microsoft products, enhancing its usability in diverse environments.