Define why product development stages exist

There is no single agreement on what the product development cycle includes. Some organizations argue about how many stages it should have, and even those who agree on the number often disagree on where one ends and another begins. Another common point of debate is scope. For some, the cycle stops at launch, while others extend it to include updates and improvements made after release.

The product development cycle can be defined as the structured process of transforming an idea into a product that can be launched and improved over time. Its stages provide a clear framework for moving from concept to reality. Having such a structure reduces uncertainty, prevents wasted effort, and ensures that every step connects back to user needs and business goals. The stages exist to guide teams through complexity with discipline, making it more likely that their product will succeed in a competitive market.^[1]