Application state in ASP.NET refers to the storage of global data that can be accessed by all users and sessions within an ASP.NET application. This data is accessible throughout the lifetime of the application and is often used to store information that needs to be shared across multiple users or sessions. It's important to note that application state data is not user-specific and is shared among all users accessing the application. One common example of using application state is to store application-wide configuration settings, such as database connection strings or other global parameters. Another example is storing frequently accessed data that doesn't change often, like reference data or lookup tables. In ASP.NET, application state is managed through the Application object, which provides methods and properties to store and retrieve data. Here's a simple example of storing and retrieving data from application state: Storing data in application state: Application["GlobalData"] = "This is a global data stored in application state"; Retrieving data from application state: string globalData = Application["GlobalData"].ToString(); It's important to note that while application state can be convenient for sharing global data, it should be used judiciously as overusing it can lead to scalability and performance issues, especially in web farm or web garden scenarios. If you have any specific scenarios or questions related to using application state in ASP.NET, feel free to ask for more detailed information. I hope this explanation provides a clear understanding of application state within the realm of ASP.NET technology. Let me know if you need further clarification or additional examples!