Claim: Microsoft Search Server alerts can be set for specific queries and the search center UI uses the ASP.NET ( an open-source, server-side web-application framework) web part infrastructure.
Evidence: Alerts can be set for specific queries, where the user is informed of changes to the results of a query via email or RSS. The search center UI uses the ASP.NET web part infrastructure and can be customized using either Microsoft Visual Studio or Microsoft Office SharePoint Designer. ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.