Interactions are collaborative actions carried out by two or more roles. Let’s take some examples:

  • The purchaser arranges finance with their bank.

  • The Project Manager and Line Manager review the Project Plan.

  • The QA Team lets the Project Manager know they have finished the tests.

  • The Line Manager asks for an update on progress.

  • Vendor and Purchaser agree on the delivery date.

  • The Sales Executive tells the Project Team of the contract change.

  • The Product Design Team gives the Development Team the specification.

  • The Engineering Department drafts the design with the Production Engineer.

  • All the Divisional Managers meet to review the budgets.

  • Each Divisional Manager reports to the Board.

A vanilla interaction between roles is shown ...

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