"Mee oversaw Pivotal Labs’ acquisition by EMC Corporation in March 2012, and continues to lead and guide the vision for Pivotal Labs as vice president of the Cloud Application Platform Group at Pivotal."
There is no Cloud Application Platform Group at Pivotal Labs. This is also part of the greater Pivotal umbrella. Rob oversees that group and Pivotal Labs, which he founded.
I'll admit that we do sometimes colloquially refer to Labs as just "Pivotal," but that's not what the name Pivotal is referring to in what you're quoting. It's referring specifically to the company named Pivotal (http://gopivotal.com/)