IT4711 addresses one of the most consequential and most frequently underestimated phases of software development: figuring out exactly what a system needs to do before anyone writes a line of code. Students learn requirements elicitation techniques, how to write clear and testable requirements, and how to document them in formats that development teams can actually use throughout a project.
Types of software requirements
| Requirement Type | What It Specifies | Example |
|---|---|---|
| Functional | What the system must do, specific behaviors and capabilities | The system shall allow users to reset their password via email verification |
| Non-Functional | How well the system must perform, quality attributes | The system shall load the dashboard page within 2 seconds under normal load |
| Business Requirements | High-level organizational goals the system supports | Reduce customer support call volume by enabling self-service account management |
| Constraint | Limitations the solution must operate within | The system must run on existing organizational infrastructure without new server purchases |
What IT4711 covers
The course begins with requirements elicitation, the structured process of discovering what stakeholders actually need, which is far harder than it sounds because stakeholders often struggle to articulate their own needs precisely, or different stakeholders want contradictory things. Students learn techniques including interviews, surveys, workshops, and observation, practicing how to ask questions that surface genuine requirements rather than vague wishes or assumptions.
IT4711 then covers writing requirements that are clear, specific, testable, and free of ambiguity, since vague requirements create downstream problems when developers, testers, and stakeholders interpret them differently. Students learn to develop use cases, structured descriptions of how users interact with a system to accomplish specific goals, and to compile complete software requirements specification (SRS) documents that serve as the authoritative reference throughout a development project. The course closes with requirements validation and management, addressing how requirements change over a project's life and how to track those changes without losing control of project scope.
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Key topics in IT4711
- Requirements elicitation techniques: interviews, surveys, workshops, and direct observation
- Writing functional requirements: specifying clear, testable system behaviors
- Writing non-functional requirements: performance, security, usability, and reliability attributes
- Use case development: documenting user interactions and system responses systematically
- Software requirements specification (SRS) documents: compiling a complete, authoritative requirements reference
- Requirements validation: confirming requirements accurately reflect stakeholder needs before development begins
- Requirements management: tracking changes and maintaining traceability throughout a project
Common requirements writing mistakes to avoid
- Ambiguous language: words like "user-friendly" or "fast" without measurable criteria leave requirements open to interpretation
- Combining multiple requirements into one statement, making it unclear which part failed if testing reveals a problem
- Specifying implementation details rather than the actual need, which constrains design unnecessarily
- Missing non-functional requirements entirely, leading to systems that meet functional needs but fail to perform adequately
- Failing to make requirements testable, so no one can verify whether the finished system actually satisfies them
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Frequently asked questions
Capella notes that students who received credit for IT4711 and IT4772 may not take IT4775, the Internet of Things Fundamentals course, since there is overlapping content between these courses under earlier catalog numbering. Check your specific program sequence to confirm how credit transfers apply in your situation.
A use case is a structured, detailed description of how a user interacts with a system to accomplish a specific goal, typically including preconditions, the main success scenario, and alternative or exception flows. A user story is a much shorter, informal statement, often following the format "As a [user], I want [goal] so that [benefit]," commonly used in agile development. IT4711 typically emphasizes use cases because they support the more thorough, document-driven requirements approach the course teaches, though both techniques aim to capture user needs.
Common assignments include conducting a requirements elicitation exercise for a case-based system and documenting findings, writing a set of functional and non-functional requirements for a specific application, developing detailed use cases for key system interactions, and compiling a complete software requirements specification document. Capella expects requirements that are specific, testable, and free of ambiguity.
Industry research consistently identifies requirements problems, including incomplete, ambiguous, or constantly changing requirements, as among the leading causes of software project failure, cost overruns, and missed deadlines. Errors caught during requirements gathering are dramatically cheaper to fix than the same errors discovered after development or, worse, after deployment. IT4711 treats requirements engineering as a critical skill precisely because the cost of getting it wrong compounds dramatically as a project progresses.