H. James Harrington beschrijft in zijn boek Business Process Improvement - the breakthrough strategy for total quality, productivity and competitiveness wat hij verstaat onder processen, activiteiten en taken:

From the macroview, processes are the key activities required to manage and/or run an organization.

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A macroprocess can be subdivided into subprocesses that are logically related, sequential activities that contribute to the mission of the macroprocess.

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Every macroprocess or subprocess is made up of a number of activities. Activities are things that go on within all processes. As the name implies, they are the actions required to produce a particular result. Activities make up the major part of flowcharts.

Each activity is made up of a number of tasks. ... Normally, tasks are performed by an individual or by a small team. They make up the very smallest microview of the process.

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Flowcharting an entire process, down to the task level, is the basis for analyzing and improving the process.

Bron: Business Process Improvement - the breakthrough strategy for total quality, productivity and competitiveness, H. James Harrington