I've been saying this for ages. The Aegis system refers to multiple things. The combat management system, the detect to engage software, the radars, the weapon systems...
From the article posted by @calculus
As far as I understand the International Aegis Fire Control Loop (IAFCL) will be integrated into CMS330 along with the CEC. Spy 7 is also considered an Aegis radar. How and where CMS330 ends and Aegis begins I have no idea (and I'm sure LMC doesn't either quite yet).
I know the program to build the CSC is a long one, and the actual hulls hitting the water are far away. Is it normal to buy a handful or a major component at a time? It seems to me that leaves us open to purchasing the latest versions of components as the program proceeds, but at the same time can increase costs to purchase and we could end up with different blocks of vessels with different capabilities.