Poor requirements are the root cause of most software project failures. Not bad developers, not wrong technology choices - unclear, incomplete, or changing requirements. Here's how to get requirements right.
Why Requirements Fail
Most requirement documents are either too vague ("the app should be user-friendly") or too prescriptive ("the button should be blue, 44px, in the top-right corner"). Good requirements define what the software should accomplish without dictating how it should be built.
Start With Problems, Not Solutions
Instead of listing features, describe the problems your software needs to solve. "Our sales team spends three hours daily entering data into two separate systems" is a better starting point than "we need an auto-sync feature." The problem statement lets the development team design the best solution.
User Stories Format
Write requirements as user stories: "As a [role], I want to [action] so that [benefit]." This format keeps every requirement tied to a user need and a business outcome. Stories without clear benefits should be questioned - they might be solutions looking for problems.
Acceptance Criteria
Every user story needs acceptance criteria - specific conditions that must be true for the story to be considered complete. "When a sales rep enters a new contact, the contact should sync to the CRM within 30 seconds" is testable and unambiguous. "The sync should be fast" is not.
Prioritise Ruthlessly
Use the MoSCoW method or a simple numbered priority system. Not everything can be priority one. If everything is critical, nothing is. Force rank your requirements - the conversation about relative priority reveals more about business needs than any other exercise.
Involve the Right People
Requirements should come from the people who will use the software and the people who understand the business processes. Executives set goals but often don't understand daily workflows. End users understand workflows but might not see the strategic picture. Include both.
Document Assumptions
Every requirement has hidden assumptions. "Users should be able to log in with their email" assumes users have email addresses, that email is the right identifier, and that your system can send verification emails. Document assumptions explicitly so they can be validated.
Plan for Change
Requirements will change. New information emerges. Business conditions shift. Users discover what they actually need through early exposure to the software. Build a change management process: how are changes proposed, evaluated, and prioritised? Agile methodologies handle this well with iterative development and regular reprioritisation.
Our Process
At Masterpiece Designs, our discovery phase is dedicated to requirements. We conduct stakeholder interviews, observe current workflows, create user journey maps, and produce a detailed requirements document that both business stakeholders and developers can understand. This investment prevents expensive misunderstandings downstream.