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|Founded||In 2003, Austin, Texas|
|Founders||Craig Malloy, Michael Kenoyer|
|Headquarters||Austin, Texas, USA|
|Key people||Craig Malloy, CEO
Michael Lovell, Chief Financial Officer
Casey King, Chief Technology Officer
Lifesize, a division of Logitech, is a video and audio telecommunications company in the United States which provides high definition videoconferencing endpoints and accessories, infrastructure products and a cloud-based video collaboration platform. Lifesize's worldwide headquarters is located in Austin, Texas. Its Europe-Middle East-Africa regional office is located in Munich, Germany and its Asia-Pacific regional office is located in Singapore.
In 2009, Logitech acquired Lifesize for US$405 million in cash. Lifesize then became "Lifesize, a division of Logitech," but continued to operate as a separate division led by Craig Malloy as its Chief Executive Officer.
Lifesize was founded by Craig Malloy and Michael Kenoyer in January 2003. It operated in “stealth mode” under the name KMV Technologies from 2003 to 2005. Investors in Lifesize included Redpoint Ventures, Sutter Hill Ventures, Pinnacle Ventures, Norwest Venture Partners and Tenaya Capital. The company name change to Lifesize Communications was unveiled at the Interop trade show in Las Vegas, Nevada in May 2005. This is also when Lifesize announced its first product, Lifesize Room, which was the first high definition video conferencing endpoint brought to market.
Craig Malloy was a product manager at VTEL Corporation in Austin until 1996, when he left and founded ViaVideo. ViaVideo was acquired by Polycom in 1998. Malloy was the senior vice president and general manager of the Video Communication Division of Polycom through 2002, when he left to found his own high definition video telecommunications company.
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Lifesize focuses on replicating face-to-face communications through high definition videoconferencing, often called telepresence. Well known for its history of innovation, Lifesize was the first video conferencing company to bring high definition video communications to market in 2005.  Additionally, Lifesize has continued to transform the industry with other “firsts” such as the first HD video system for under $5,000 and $2,500, first one-button HD streaming and recording solution, first integrated virtualized video infrastructure platform, the broadest range of support for mobile devices, first touch screen phone optimized for video collaboration, and first all-in-one video conferencing solution assembled in minutes. 
In 2013, Lifesize introduced a new brand concept called, “Smart Video” that describes the connected relationship between its endpoints and infrastructure. To date, no other video conferencing vendor provides such a high level of integration between the two. 
In 2014, Lifesize introduced Lifesize Cloud, a SaaS video conferencing solution that allows users to participate in a video call from their desktop, laptop, smartphone, tablet or conference room. Lifesize Cloud provides a connected experience by enabling users to make video calls using their device of choice or any video-enabled conference room, and participate in both ad-hoc or scheduled calls. 
Lifesize product stable includes high definition endpoints and accessories, NAT\firewall traversal, audio phones, ISDN gateways, Multipoint Control Units and management systems, as well as mobile video conferencing software and a cloud-based IaaS offering for video conferencing. Lifesize also offers a streaming, recording, and auto-publishing server called LifeSize Video Center.
Lifesize video conferencing solutions are used by a wide array of customers, from the largest of enterprises down to small businesses, and across several industries (education, financial services, manufacturing, design, government, technology, retail, health care, construction, real estate, public utilities, legal services, arts organizations, nonprofits, transportation, media and entertainment).
Some Lifesize customers are:
- BBVA Group
- Global Leadership Foundation 
- University of Arkansas 
- Rackspace 
- Hyundai Motor Company 
- National Geographic Society 
- LifeSize: About Us
- New York Times. Logitech Breaks Into Videoconferencing, The New York Times, November 11, 2009.
- LifeSize Telepresence Gear
- LifeSize Unveils LifeSize Video Centre