 What is CICSPlex? A CICSPlex is commonly described as a set of interconnected CICS® regions that process customer workload. A typical CICSPlex is therefore the set of interconnected TORs, AORs, FORs etc. For CICSPlex SMs purposes, a CICSPlex is any logical grouping of CICS regions that you want to manage and manipulate as a whole, i.e. a CICSPlex is a management domain. In CICSPlex SM terms, a CICSPlex could therefore be every CICS region in your enterprise, connected or not to each other. Alternatively, you could define multiple CICSPlexes. CICSPlexes are typically groups of systems that are logically related by usage, e.g. test, quality assurance, production CICSPlexes. The most significant facts about a CICSPlex managed by CICSPlex SM are: - The CICSPlex is the largest unit you can work with. That is, you cannot group CICSPlexes and manipulate such a group as a single entity.
- CICSPlexes are mutually exclusive, so no CICS region can belong to more than one CICSPlex.
CICSPlex SM enables you to define subsets of a CICSPlex, which are known as system groups. CICS system groups are not mutually exclusive, and can reference the same CICS regions, or other system groups. CICS system groups are typically used to represent region types such as the set of TORs or AORs; physical location such as the CICS regions on a z/OS® image; a set of CICS regions processing a (partitioned) workload such as "payroll". By specifying the CICSPlex name as the context, and the system group name as the scope, you define the set of regions to be manipulated by CICSPlex SM. You can therefore manipulate every single region, or an individual region via a single command. | 
