Affinitätsgruppe(A geographical grouping of a customer's hosted service deployments and storage accounts within Windows Azure. An affinity group can improve service performance by locating computer workloads in the same datacenter or near the target user audience)
Affinitätsmarketing(Selling products or services to customers with similar interests on the basis of their established buying patterns or preferences. Additionally, several noncompeting advertisers may join together to develop a single targeted campaign)