IBM IMS for Dummies provides a quick entry point for technical professionals who may be new to the IBM Z environment or who have new responsibilities that include the IBM IMS solution. This high-level booklet gives you an introduction to IBM IMS: its origins as part of the Apollo program, its role in enterprise business worldwide, the IMS Database Manager, the IMS Transaction Manager, and its transformation into a modern, industrial-strength database and online transaction processing system that aligns with the IBM Hybrid Cloud strategy.