Process Models: Who is doing what?

Process Models: Who is doing what?

Process Models
Process Model Diagram

Every Business Analyst and Business Consultant should know something about Process Models and Process Modelling. Creating a simple model of what is happening outside the IT System can be a very useful place to start. You may even benefit when there is no IT System at all!

Ways of using Process Models

A Process Model is simply a representation of what the process is doing in the real world. This representation is usually graphical. There are different notations, and a large number of tools to help you draw the pictures.

Trivial Process Model - Documented using a Process Modelling tool
Trivial Process Model – Documented using a Process Modelling tool

Process Models can be used in a number of ways, many of which overlap.

  • A model can be used as a framework to assess the process against some criteria.
  • Models can be used to explore the effect of some change to the process.
  • Models can also be used to show how the physical world and IT interact.
    Using Process Models appropriately can help ensure that any changes are beneficial to the business.

Process Models: “As-Is” and “To-Be”

Process Models can be used to explore changes to a process. The “As-Is” model shows how the process works now, and the “To-Be” model shows how the process will work after the proposed changes. Comparing the two models allows us to demonstrate how the changes will be beneficial to the business.

The changes need not be changes to IT systems. The benefits which can be demonstrated may be the elimination of roles, or reduction in time or the number of steps.

Process Models: How does IT mesh with the business?

Gears - Process Models show how things interact
Gears – Process Models show how things interact

The Swim-lane process models demonstrate how different roles collaborate or people use several different tools or IT systems to perform their work. Imagine the different roles or tools as “gears” and you will understand what I mean. Using swim-lanes helps you to visualise and communicate how the different lanes interact.

Traps you can avoid using Process Models

Where a business process involves activities in the physical world (and not just doing things at a screen) then a process model can help put the IT systems into context. Doing this may prevent you spending time on details which are not important.

Ways Process Models can trap you!

Many process modelling tools allow you to break-down individual steps into smaller pieces. Resist the temptation to break things down too early, or everywhere. If you keep your models at a high level you will reduce the amount of work you have to do, and you will not reduce the value of the models.

Conclusion

Process Models can be used to put the IT system into a wider business context. They can even be used to analyse and rationalise processes where the IT systems do not play a significant role. Process Models are commonly used to demonstrate the claimed benefits of a new way of doing things, the so-called “As-Is” and “To-Be” models.

The keys to success with Process Models are to present the simplest model which is appropriate for your needs and to control the amount of detail.

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