Boeing's proposal, known as the CST-100 Starliner, was selected as the winner of the CCV program in 2008. The CST-100 was designed to be a reusable spacecraft that could carry four crew members to the ISS and back.

The development of the CST-100 was a complex and challenging endeavor. Boeing assembled a team of engineers and technicians to work on the project, which included the design and testing of the spacecraft's systems, including its propulsion, life support, and communication systems.