• IMS is providing more componetization, rewriting systems services with cleaner interfaces and extending its layered approach for Systems Management. The Structured Call Interface (SCI) ties it all together. The BPE (Base Primatives Environment) was first delivered in V5 and is exploited further with each subsequent version. Shared Queues (CQS- Common Queue Server) is the "Queue Unit", the first modular unit, delivered with IMS V6 and enhanced with IMS V7.
• The Common Service Layer is providing a single system image and easier systems management for the Sysplex environment.
• The IMS V8 Structured Call Interface is a new IMS address space which provides an interface for communication between IMS address spaces. Communication is provided on the same CPC or across CPC's using the MVS Cross Coupling Facility (XCF).

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