What is another name for requirements gathering?

What is the difference between requirement gathering and elicitation?

The term "gathering" can be misleading because it suggests that requirements are simply waiting to be collected. In reality, the process is more active and investigative. This is why many professionals prefer the term "elicitation," which means to draw out or bring forth. It reflects the work of asking questions, running workshops, and observing people to uncover needs that may not be obvious at first.

The SWEBOK Guide describes requirements elicitation as the first stage in building an understanding of the problem the software is required to solve. It is a collaborative effort between your team and ours to discover the real goals, constraints, and expectations. The aim is to move from a general idea to a precise, shared definition of what success looks like.

Thinking about this work as elicitation helps set the right expectations. It is a process of discovery, not just documentation. It involves digging into how your business actually runs to find the opportunities where software can make a real difference. You can find more information in our other guides on requirements engineering.

Why do projects fail without clear requirements?

When a software project misses its goals, the problem often starts with the requirements. If the plan is not clear and agreed upon from the beginning, it is easy for the scope to expand, for misunderstandings to arise, and for the final product to not solve the problem it was meant to. This is a common and expensive issue in software development.

The Project Management Institute, or PMI, has studied this problem in detail. Its research found that inaccurate requirements management is a major reason why projects do not succeed. Without a solid foundation, teams build the wrong thing, waste time on features that are not important, and deliver late and over budget. The project's success depends on getting this first step right.

A clear set of requirements acts as the blueprint for the entire project. It guides the design, development, and testing phases, ensuring that everyone is working towards the same goal. It also provides a baseline against which you can measure progress and make informed decisions if changes are needed. A written plan is what protects your budget and keeps the scope from drifting.

What are the different types of requirements?

Requirements are not all the same. They are typically classified into different types to make sure all aspects of the project are covered. The International Institute of Business Analysis, or IIBA, classifies requirements into four main categories in its BABOK Guide. These are business, stakeholder, solution, and transition requirements.

Business requirements are the high-level goals of the project. The IIBA's guide explains that these are statements of goals, objectives and outcomes that describe why a change has been initiated.

Stakeholder requirements describe the needs of the people who will use or be affected by the new system. Solution requirements detail what the software must actually do, splitting into functional requirements (like 'create an invoice') and non-functional requirements (like 'the page must load in under two seconds'). Finally, transition requirements cover temporary needs for moving from the old system to the new one, such as data migration and training.

How do you know if you need custom software?

Many businesses start with off-the-shelf software like Zoho, Odoo, or a standard accounting package. These tools are great for common business problems, but sometimes a company's unique process outgrows them. The most common sign we find in discovery is a spreadsheet kept beside Odoo, Zoho or an accounting package that has become the real record of variations, measured items, drawing revisions or price breaks.

This spreadsheet becomes the real record for things the main software cannot handle properly, such as a variation order, a measured item, a drawing revision or a supplier price break. Your team may be exporting data from one system, changing it in Excel, and then importing it into another. This manual work is slow, creates extra work, and is a common source of errors.

When you see this happening, the spreadsheet itself is a great starting point for defining requirements. It shows exactly where your current tools fall short and what a custom system needs to do. If your team relies on spreadsheets to fill the gaps in your main software, book a free discovery call and we can walk through your process with you.

What documents capture the requirements?

To turn conversations and ideas into a concrete plan, we write down the requirements in a series of documents that you approve before any building starts. This makes sure we have a shared and detailed understanding of what needs to be delivered. The SWEBOK Guide explains that a software requirements specification establishes the basis for agreement between you and us on what the software product is to do.

On our projects, we produce three key documents. A Business Requirements Document, or BRD, captures what the business needs and why. A software requirements specification, or SRS, sets out the detailed functional and non-functional requirements. A Software Design Document, or SDD, then describes how the software will be built to meet those requirements.

We align our software requirements specification with ISO/IEC/IEEE 29148 so requirements are complete, consistent and testable. This level of detail is a key part of our work in requirements engineering and business analysis, and it is what allows us to build the right system for you.

How do we make sure the requirements are right?

Writing good requirements is about more than just listing features. It is about understanding the business context. Before we estimate or build, we work with you to make five things explicit: the scope, who signs off on what, how work flows today, what other systems are involved, and the real-world constraints.

We document how work actually flows, including the steps your people do off-system with emails, phone calls, or spreadsheets. This helps us see the full picture. We also agree on who has the authority to approve decisions, so the project does not get stuck waiting for an answer.

We then trace every requirement from the high-level business goal to the user story to the test case that will prove it works. This creates a clear line of sight from your objectives to the finished software. We also pressure-test the scope, cost, and timeline against real constraints, not best-case assumptions, to create a plan that is realistic and achievable.

How long does requirements discovery take?

The initial discovery phase is a focused effort to define the project. We typically plan for discovery to take two to three weeks. The exact duration depends on the size of the problem and the availability of the key people on your team who need to be involved.

This work is part of every project we take on and is not sold separately. When a project has stalled because nobody wrote down what the software must do, we start with this requirements work before writing any more code. It is the right way to get a project back on track.

At the end of this phase, you receive a set of documents that includes a prioritised roadmap and an estimate. The requirements documents we write can be taken to us or to any other team to build from. At the final handover of the completed project, you receive the source code, the documentation, the tests and every credential. You own everything, with no lock-in.

Key takeaways

• Requirements engineering is the formal name for defining what software must do.
• The process is an active "elicitation" of needs, not a passive "gathering" of lists.
• Getting requirements wrong is one of the main reasons software projects fail.
• Written documents like a BRD and SRS create a clear, shared plan for everyone.
• Every feature in the plan should be traceable back to a specific business goal.
• The process should result in documents you own and can use to get estimates from any team.

Sources

1. Requirements elicitation and the requirements process (SWEBOK Guide) (swebokwiki.org)
2. Requirements management and project failure, Pulse of the Profession (PMI) (pmi.org)
3. Four requirement categories in the BABOK Guide classification schema (IIBA) (iiba.org)
4. Requirements specification documents: system definition, system requirements, software requirements (SWEBOK Guide) (swebokwiki.org)