•
CCM mode, an encryption algorithm • Client Configuration Manager, a component of Microsoft
System Center Configuration Manager •
Combined Cipher Machine, a WWII-era cipher system • Community Climate Model, predecessor of the
Community Climate System Model •
Constrained conditional model, a machine-learning framework •
Convergent cross mapping, a test for cause-and-effect relationships •
CORBA Component Model •
Customer communications management, a type of software == Government ==