Yes. Adobe ID's enable online activation of your Creative Cloud apps.
What is online activation, and why is it required?
Online activation is a process in which an Adobe app connects to Adobe servers, and is then associated with the computer on which it's being used. It helps Adobe ensure that the software you're installing is genuine Adobe software, and protects you from inadvertently installing counterfeit software.
Activation will take place once every 30 days for a subscription license check. If you are not online for 30 days, your product will tell you to connect to the Internet. In the event that we cannot activate the product, we will warn you when you launch the application. Note that blocking access to the activation server will prevent the app from launching.