vCAC to vCO to VCM (or) vCAC to VCM? Best practice?

Hello folks,

Its been documented and said that vCAC integrates well with vCO out of the box.

But from a overall solution point of view, does vCO integrates with VCM/vCOPS and then have vCAC integrated with vCO to gain all the added functionality that VCM/vCOPS offer?

or does vCAC provides a direct integration with VCM/vCOPS?

thanks!