2025-07-09T12:44:52Z

Accurate software effort estimates aren't impossible, but it can take as much time to do the estimate as it does to write the code.

Accurately estimating the effort it takes to deliver a unit of software is notoriously difficult.

Dorian Taylor

Estimate the effort it will take to deliver a unit of work product before committing to a budget and/or schedule.

Process Model Issues

Why is software development so difficult to estimate?