A Session object stores information and variables about a user and retains it through the session.

In the context of .NET development, particularly in ASP.NET, the session object refers to an instance of the HttpSessionState class. This object allows developers to store session-specific data for a user during their visit to a website.

Here’s a concise answer for an interview setting:

“The session object in ASP.NET refers to an instance of the HttpSessionState class, which enables developers to store and retrieve session-specific information for a user during their visit to a website. It provides a way to maintain state across multiple requests from the same user, facilitating tasks such as user authentication, personalization, and shopping cart management in web applications.”