(ORM). The ORM framework Openstack Resource Manager Overview ORM API services runs on DCP. ORM talks to a Region agent service called Catalog ORD in LCP regions to List of Available create resources. Regions OpenStack Resource Manager (ORM) Resource ORD agent keep Creation Tenants, Images, resources in Sync on all Flavors, Etc regions. FIGURE 4.4 OpenStack resource manager. Network Functions Virtualization Infrastructure is a collection of services on a DCP, acting as a single point of entry that provides two key functions: A resource creation gateway that provides APIs for the definition of new images, perfor- mance profiles, and user accounts, and then distributes those to the requisite AIC zones A region discovery service that returns zones that are best suited to support the tenant's needs at the time of request A great analogy for ORM is an online hotel reservation system. By inputting the selection cri- teria, the service analyzes live information on thousands of hotels and ultimately provides a room recommendation. ORM essentially provides the same value for an AIC. ORM is also important because it can be used to quickly push out updates to all the AIC zones and to manage the distribu- tion of workloads that run on the AICs. ORM is depicted in Figure 4.4. NFVI DEPLOYMENT This section explores the strategy and the methods for deploying cloud zones. From a business perspective, each zone location is fundamentally determined by two factors-customer demand and internal use. From a technology perspective, each zone is located based on proximity to those customers SO that latency is minimized. In addition, telecom operators require carrier grade solu- tions that provide resiliency and fault tolerance. 4.4.1 MEETING ZONE DEMAND An interzonal architecture facilitates the flow of traffic from site to site. The interzonal architecture refers to functions such as network signaling/controlling, transport connections, and traffic for- warding that takes place between cloud sites, generally over some distance. This make