When developing Web applications with ASP.NET, you sometimes need to access data which is shared among users again and again throughout the life of the application. If you want to share a value or an object instance between all sessions, you typically use the Application object. However, a better alternative to Application object is a static property defined in a class. Static properties maintain their values throughout the Application. So they work like the Application object. Storing and reading a static value is faster when we compare it with the Application object because static variables do not need to look-up in a collection when you refer to them and you do not need to cast from object to a specific type. The key reason that the Application object exists in ASP.NET is for compatibility with classic ASP code to allow easy migration of existing applications to ASP.NET.