This white paper discusses the concept of "Carrier Cloud" and the opportunities it presents for telecommunications carriers. The three pillars of Carrier Cloud are being carrier-centric, able to deliver carrier-grade cloud services, and providing differentiation through IT and network innovation. Carriers can capture new revenue streams by positioning themselves in key value chains like business IT using their cloud. Carriers have advantages over other cloud providers through their networks, commercial maturity, datacenter infrastructure, and ability to ensure high service availability. The paper argues Carriers should pursue cloud services as a strategic opportunity.