Upwork is a global freelancing platform where businesses and independent professionals connect and collaborate remotely. The company was founded in 2015 as a result of a merger between Elance and oDesk, two of the largest freelance marketplaces at the time. Upwork's platform allows businesses to find and hire freelancers for various projects, ranging from web development and design to writing and customer service. Freelancers can also use the platform to find work and build their careers. Upwork is headquartered in Mountain View, California and has offices in San Francisco, Chicago, and Oslo, Norway.