Udemy.com is a marketplace for online learning and teaching. Unlike traditional university Mooc programs, Udemy provides a platform for business experts of all kinds to create free or paid courses.  Udemy provides the tools that allow these experts to create their courses, promote them and monetize their expertise to the Udemy audience.

The completion of the courses on Udemy results in a certificate of achievement that can be downloaded directly by participants who have completed their courses. These certificates are not recognized as diplomas. Udemy participants take courses largely as a way to learn new skills to apply in their current job or to prepare for the rest of their careers. 

More than 30 million participants are on the platform, which offers more than 100,000 courses in more than 50 languages.