What does requirements analysis actually do? This guide explains what a requirement is, where requirements come from (users, business, competitors), how requirements differ from features and solutions, and the full process.
Functional requirements answer "what the system does"; non-functional requirements define "how well it does it." Based on IIBA BABOK and software engineering standards, this guide covers performance, security and usability quality attributes.
User stories shift requirements from writing about features to talking about them. Combined with acceptance criteria, they define what "done" means. This guide applies Mountain Goat Software's 3Cs model.
Personas make "who we design for" concrete, and journey maps reveal "where the experience breaks." Applying Nielsen Norman Group's methods, this guide covers the construction steps and application scenarios for both.
Prioritizing requirements is the hardest and most important step in requirements analysis. Based on Product School's framework, this compares MoSCoW, RICE, the Kano model and the value-cost matrix, with selection and pitfall guidance.
A PRD is the hub that connects product goals to engineering delivery. Applying ProductPlan's approach, this guide explains the PRD vs. MRD distinction, the modules a PRD should include, and the full drafting-to-review process.
Business analysts connect business goals with solutions using data and structured methods. Drawing on Coursera's BA career guide, this covers the standard BA workflow, core skills, certifications and career outlook.
A Mind the Product essay argues that in the AI era the PRD as a static document can no longer do the work of a spec, and that a golden evaluation dataset is replacing it as a runnable definition of "good."
Aha! Builder added virtual user testing: define a job to be done and a persona, and an AI virtual user walks through your app, delivers structured feedback, and suggests improvements before launch.