According to BPMN 2.0 specification, an activity represents “work that a company or organization performs using business processes.”
In a BPMN process diagram, an activity is represented with a rounded-corner rectangle and named according to the kind of work, which has to be done.
BPMN defines two main types of activities: atomic and compounded.
An Atomic activity is defined as a task and represents an individual action in a process that doesn’t need to be broken down any further.
A Compounded activity is defined as a sub-process and represents work in a process that can be broken down to a finer level of process model detail. A sub-process can be represented in an expanded view that shows its details or in a collapsed view that hides its details.
A special type of an activity is a Call Activity, which references a reused globally defined task or sub-process. A Call Activity is represented with a thick border.
Beside these main types of activities, BPMN 2.0 defines different behaviors and properties of activities, which are visually annotated with standardized symbols, for example: a repeatable activity, a user performed task, an automated task and a transactional sub-process.
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Business Process Management (BPM) and Improvement (BPI) is now an embedded practice in all commercial organizations across every industry sector. It’s likely that you are here because you or your organization require training to support this need.