Lifesize provides video conferencing and communication solutions integrating hardware endpoints and cloud services. The Icon series of meeting room systems pioneered high-definition and 4K video conferencing, while Lifesize Cloud offers an HD and 4K enterprise video conferencing platform supporting up to 10,000 simultaneous live stream viewers and compatibility with mainstream UC platforms such as Teams, Zoom, and Cisco Webex. The CxEngage omnichannel CCaaS platform integrates customer service interactions across voice, video, instant messaging, email, SMS, and social media.

Founded in Austin, Texas, in 2003, Lifesize is a pioneer in enterprise video conferencing. It introduced the world's first HD video conferencing system in 2005 and the world's first 4K video conferencing solution in 2017. Following the acquisition of its assets by Enghouse Systems in August 2023, the brand continues to operate and develop under Enghouse Video. Serving enterprises and contact centers in the financial, healthcare, education, and professional services industries, its solutions are utilized by Yelp, Yale University, and NASA.