Different types Quote by Anthony Ulwick

In software, we rarely have meaningful requirements. Even if we do, the only measure of success that matters is whether our solution solves the…

— Jeff Atwood

Requirement completeness: Requirements are sufficient to distinguish the desired behavior of the software from that of any other undesired program that might be designed. .

— Nancy Leveson

Requirements represent the medium of exchange between IT and the business.

— John Williams

“Software quality begins with the quality of the requirements.”

— Pearl Zhu

At the start of any program, asking questions is the most important part of the process. If you get [the customer's] requirements wrong, then…

— Joe Sutter

“Therefore the most important function that software builders do for their clients is the iterative extraction and refinement of the product requirements. For the…

— Frederick P. Brooks Jr

“These needs, then, are just as real as any other requirements; we refer to them here as required constraints or design constraints, and they…

— Derek Hatley

“Documenting the reasons behind requirements will give your team invaluable information when making daily implementation decisions.”

— Andrew Hunt

“that every product needs a single, accountable product manager, who is responsible for the product definition (the combination of product requirements and user experience…

— Marty Cagan

In our product development cycle, we ask and listen to our customer about what she wants.

— Emily Weiss

“How can we walk away from requirements that we know to be true to pursue something that we think will help?” It turns out…

— Ben Horowitz