EdX

edX is an American for-profit massive open online course provider. It was founded by MIT and Harvard. It is a subsidiary of 2U.

edX was founded in May 2012 by MIT and Harvard, based on the MITx initiative, created by Piotr Mitros, Rafael Reif, and Anant Agarwal in 2011 at MIT. Gerry Sussman, Anant Agarwal, Chris Terman, and Piotr Mitros taught the first edX course on circuits and electronics from MIT, drawing 155,000 students from 162 countries. In 2013, they partnered with Stanford and in June 2013 they reached 1 million students. edx.org released as open source, creating Open edX.

In September 2014, edX announced a high school initiative. The following month, edX announced professional development courses, and in March 2015 it partnered with Microsoft.

In April 2015, edX partnered with Arizona State University to launch the Global Freshman Academy.

In September 2016, edX launched 19 MicroMasters programs. It launched an additional 16 MicroMasters programs the next year.

In January 2018, edX partnered with Microsoft and General Electric to provide subsidized online courses and guaranteed job interviews. That same month, Tech Mahindra partnered with edX to re-skill workforce on new tech areas. Later that year, edX introduced nine Master's degrees on the platform. The degree programs can be completed fully online and are offered by universities such as Georgia Institute of Technology and University of California San Diego.

On January 10, 2020, edX launched two MicroBachelors programs. The programs offer undergraduate level courses which can lead to university credit for degree seeking students.

On June 29, 2021, edX and 2U announced they had entered into a definitive agreement to merge. 2U would acquire edX's assets for $800M in cash. On November 16, 2021, 2U completed its acquisition of the edX business and website from the nonprofit organization.