The NASA LLIS is a database of "lessons learned" from contributors across NASA and other organizations. Its varied contents are sought by thousands of visitors a month who represent a multitude of disciplines including science, engineering, education, manufacturing, and project management.

The system and its content are managed by the NASA Lessons Learned Steering Committee (LLSC). This Committee is composed of members from all NASA centers. The LLIS Curator, who serves under the direction of the LLSC Chairperson, has operational responsibilities for the system.

The LLIS contains a growing database with lessons added on a fairly regular basis. Approved lessons ready to be added to the system are first indexed, thus allowing their quick retrieval by either simple or complex search criteria. At the same time, using push technology, stored profiles are used to automatically email notices to users having pre-registered interests matching the new lessons.