How much detail

How much detail?

Tips for the right level of detail

for your requirements

Level of detail – example 1

Lots of freedom for

drivers

Level of detail – example 2

Highly controlled

parking

Which is better?

Not detailed• Experienced drivers will manage• Creative use of space is possible• Cars could get blocked in• Space to park a bus

Detailed• Most drivers will manage• How space is used is predefined• Cars can always get in & out• Doesn’t have space for a bus

Which is better? It depends!

What does detail level depend on?

• Many factors influence what the optimal level of detail is.

• Here are just a few…

Factor 1: What is the next step?

Detail level depends on what the next step in the process is.

Compare:– input for the initial business case– basis for COTS software selection– discuss with product owner before the next sprint

Factor 2: Who’s going to use it?

• How much does the recipient know about the business domain?

• How much time will she spend reading them?

• Does he have a different cultural background, and if so: how does that affect the way they interpret your requirements?

Factor 3: When do you need it?

• Requirements will change.• Delay writing the details until they are

needed.

Factor 4: Do stakeholders care?

• Do these details really matter to the stakeholders?

• E.g: requesting a specific colour– Trivial & irrelevant?– Needed to comply with a standard?

Factor 5: What is the impact?

• What could go wrong?

• Is it worse than spending an extra couple of days writing detailed requirements?

Just enough detail

• Enough confidence for the customer • Enough freedom for the supplier

• Level of detail does not have to be the same for all parts– E.g. application interfaces & standards

Robert van Lieshout

+31 6 2881 5272

[email protected]

www.pragmaticall.nl

@robertvl

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