The Joint Capabilities Integration and Development System (JCIDS) is like a big puzzle. It helps the government put together all the different pieces of different military systems to make a better whole. It helps the different parts—like the Army, Navy, and Air Force—work together to create one big system that can do better things. JCIDS helps all the pieces fit together so that all the military services can work together and do better work, and it helps the government decide which projects to invest in for the military.