This is the question that should be asked to determine the preferred solution, because it indicates whether CK needs to use Service Contracts or not. Service Contracts are agreements between a company and a customer that specify the duration and level of support for a product or service. If CK provides support on a periodic basis and renews it annually, then they should use Service Contracts along with Entitlements. If CK provides support based on other factors, such as number of cases or products purchased, then they can use Entitlements only. Verified References: : Service Contracts and Entitlements