Microsoft SQL Server is a relational database management system developed by Microsoft. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network.
Users will utilize a web application by clicking or typing links. They will hope to see the desired content, for example, an article, a contact form, a product description etc. If there is no URL routing, the web application will never understand what the user wants to see and may show a blank page or an error page instead.
It's not just about simple email messages, but about a lot of forms of communication between different parts of the application or between different applications. The more traffic a web application gets, the more requests it must handle per second, the bigger the risk will be that hosting this application will be very expensive (especially, cloud hosting) or that the web server will stop working with data loss.
It is important not just to create an application but also to create a fast application, which will result in accelerating revenue. Integration with so-called caching backend is often one of the main steps taken to improve a web application performance.