A Cloud Information Service (CIS) is an entity that provides cloud resource registration, indexing and discovery services. The Cloud hostList tell their readiness to process Cloudlets by registering themselves with this entity. Other entities such as the resource broker can contact this class for resource discovery service, which returns a list of registered resource IDs.
In summary, it acts like a yellow page service. This class will be created by CloudSim upon initialisation of the simulation. Hence, do not need to worry about creating an object of this class.
Author: Manzur Murshed, Rajkumar Buyya