The lunar lander concept was not selected for funding by NASA as part of Artemis in the 30 April 2020 announcement.

Boeing Human Landing System was a proposal for the design of a lunar lander and lunar orbit spacecraft that would use the Space Launch System (SLS rocket) being developed by NASA to launch the lander into Earth orbit and then place it in lunar orbit where it would rendezvous with the NASA Lunar Gateway and join up with a crew sent up in an Orion space capsule.

The lander was explicitly designed to be launched on the Boeing-built SLS Block 1B rocket rather than assembled in space after multiple launches, reducing the number of mission-critical events from 11 to 5, and reducing mission complexity.

The lander was intended to reuse several technologies from Boeing's CST-100 Starliner, so that the pressure vessel, life support and avionics systems could be flight-tested and human-rated before being integrated into the lander.

[3] Intuitive Machines was selected to build and test the lander's engines and fuel tank structure.