Apogee 21 Holdings, Inc. provides digital media solutions. The company primarily provides MagCast Publishing Platform, a cloud-based digital publishing software which enables customers to create mobile magazine apps, as well as facilitates the monetization of digital content through advanced marketing functions. It also offers related training courses and support services. The company was formerly known as 30DC, Inc. and changed its name to Apogee 21 Holdings, Inc. in August 2022. Apogee 21 Holdings, Inc. was founded in 2005 and is based in Wheat Ridge, Colorado.