Tactical goals · Resourcing · Component
The resource estimate
People-weeks, money and any external dependency, stated before commitment.
The deliverable
What it is
Money is usually the easiest of the three resources to secure and the least often the real constraint. Time from the specific people who can do the work usually cannot be found.
Estimating in people-weeks first is what surfaces that. An estimate expressed only in money hides the binding constraint.
One level in
What it is made of
Each element is a constituent part of the component. Follow one to see the attributes it carries.
The effort
How much work it takes, in people-weeks.
3 attributes: Effort · Estimate confidence · Basis
LearnThe capability
Which specific skills the work needs.
2 attributes: Capability required · Availability
Learn
Estimate in working weeks, not calendar weeks. The two differ by about a third, and always in the same direction.