Mohammad Yasein presents on Microsoft WebMatrix. WebMatrix is an integrated development environment for building websites using ASP.NET. It includes tools for development, a lightweight web server, and supports SQL Server Compact databases. WebMatrix can be used by developers, students, and anyone looking to build a website. Yasein demonstrates WebMatrix features like Razor syntax and opens an example Joomla website built with WebMatrix. He encourages learning more about WebMatrix on the ASP.NET website.