Active Directory
Active Directory (AD) is a Windows OS directory service that facilitates working with interconnected, complex and different network resources in a unified manner.

Application Log
The Application log records events logged by programs. For example, a database program might record a file error in the Application log. Program developers decide which events to monitor.

ASP.NET is Microsoft’s technology to allow web developers to create dynamic web applications. ASP.NET is helpful to create anything from ecommerce website, small applications to large applications.