Business cases are out of favour, often dismissed as unnecessary bureaucracy. This is largely because they are lengthy, thesis-like falsehoods, which seem at odds with Agile processes. Teams are pressured to complete them before any customer discovery takes place, which unfortunately leads to an overemphasis on delivery costs rather than the true potential of the opportunity.
However, when done right, a business case remains invaluable—particularly when approached iteratively, evolving as we gather more insights. Just as we develop products in stages, refining them as we learn, the business case should also be built step by step. This approach ensures the case stays relevant as the opportunity unfolds, while engaging stakeholders at key moments to share assumptions and make informed investment decisions. Even if the business case is never formally shared, the iterative process of crafting it clarifies our thinking, sharpens decision-making, and helps us focus on the ideas most worth pursuing.
What is a Business Case?
A business case is a collection of the minimum information required to facilitate a decision that will impact the product, its customers, or the business. It doesn’t need to be a formal document, but when decisions involve multiple stakeholders, capturing the necessary information in a standardised format helps ensure clarity and alignment.
A well-constructed business case focuses only on the essential details required for the business to make a decision. It serves as the single source of truth, bringing relevant facts together into a cohesive narrative to convince decision-makers. Essentially, it tells a story about how value will be created, aiming to demonstrate a positive return on investment for the business or stakeholders involved.
However, it’s important to remember that every business case is ultimately an informed hypothesis, based on the best available information at the time. It acts as a critical checkpoint that ensures alignment across teams and guides decision-making. When done well, it keeps everyone focused on high-value activities. When overlooked or done poorly, it can lead to wasted resources and misaligned priorities.
The challenge of creating a business case lies in gathering all the necessary information before a Go/No Go decision can be made. This often includes details about the target customer, market size, competition, revenue models, potential solutions, project costs, and operational considerations—all of which take time to assemble.
At Brainmates, we align the development of business cases with our Product Development Process, ensuring that decisions are made progressively as the opportunity evolves, helping to mitigate delays and keep teams focused on value creation.
Business Case Fundamentals
A business case must address several key questions to be effective:
- Is there a sizeable market problem worth solving?
- How will value be created for the business?
- What are the costs involved in creating that value?
- Will the value generated significantly outweigh the costs?
- Is this the best use of the business’s resources, or are there better, safer investments available?
Any information outside of these core questions should be avoided in the business case. Including unnecessary details—such as intricate customer requirements or solution designs—can cloud the decision-making process and distract from the goal of prioritizing the opportunity. The focus should always be on the information that directly supports a decision to proceed or not.
Avoid This Common Business Case Mistake
One of the most common mistakes when developing a business case is starting with a pre-determined solution in mind. This often happens because the costs of a solution are easier to estimate, leading teams to focus on costs first and then scramble to justify the benefits. While this approach might be acceptable for low-risk experiments, which often don’t require a formal business case, it can be disastrous when the cost of failure is high.
A business case should focus on evaluating the opportunity first, rather than justifying a specific solution. Starting with a solution can lead to overlooking more strategic alternatives or missing better ways to create value for the business.
Develop a Business Case in Stages to Build Confidence
When a new idea lands on your desk, it may come with little or no supporting information, making the development of a business case feel daunting. So where do you start to build confidence quickly?
The first question to answer is: Is there a sizeable market problem worth solving?
From a product management perspective, the business case process should begin by understanding who the target customer is and what benefit is being created for them. By creating value for the customer, you unlock the opportunity for an exchange of value with the business.
In the Brainmates Product Management Framework, this starts with an assumption in the Ideate stage. This assumption is your hypothesis about what the customer benefits might be and how these could translate into a positive outcome for the business.
You might be thinking, “A guess? But isn’t a business case supposed to be accurate?” And you’re right—eventually. But every idea starts somewhere, and the initial step is to make an educated guess. This hypothesis is what we will test in the next stage.
With this starting point, the next step is to Explore the idea by validating it with the outside world. The fastest way to test whether your target customer has a problem worth solving is to go directly to them. If you can’t find any customers experiencing the problem, the likelihood of your idea succeeding takes a major hit. Fortunately, at this stage, failure is cheap since you haven’t invested significant time or resources.
On the other hand, if you discover that customers who fit your description are everywhere and all share the same pain point, you’ve uncovered a potential Market Opportunity.
The final step is determining if addressing this Market Opportunity will create value for the business. This involves understanding how many customers are willing and able to exchange something of value—whether money, time, effort, or attention—to solve their problem. At this point, you’re generally looking for a financial benefit substantial enough to justify further investment.
Throughout these phases, there are key decision points where the business must decide whether to continue, pivot, or stop development altogether. By approaching the business case in stages, you build confidence progressively, ensuring that each step is backed by real-world validation before moving forward.
Structuring The Business Case
A business case should include the minimum amount of information and should be updated iteratively at each stage. In the Ideate phase, the information will be high-level and more speculative. As you progress into the Explore phase, more research and analysis will be completed, resulting in more accurate and detailed insights for the next decision point. While the depth of information will evolve, the overall structure of the business case should remain consistent across stages:
- Summary
- Market Potential and Market Analysis
- Financials
- Risks and Issues
- Recommendations
To prevent the business case from becoming too lengthy or cumbersome, it’s important to focus on the key outcomes and insights. Supporting research, analysis, and background information should be referenced and linked, rather than included in full. This keeps the business case concise and decision-focused, while still allowing stakeholders to dive deeper into the details if needed.
It’s Worth It
A business case is a critical tool for facilitating informed business decisions, even if it’s solely for your own clarity. It is the central place where all relevant facts are documented and woven together into a cohesive story that answers the key questions: what, why, how, when, where, and how much. Much like product development, the business case evolves through different stages, each producing a more refined document:
- Business Case 1: Market Potential Paper
- Business Case 2: Draft Business Case
- Business Case 3: Preliminary Business Case
- Business Case 4: Baseline Business Case
While the structure remains the same, each version of the business case increases in depth and accuracy as more information becomes available. This phased approach allows for better decision-making at each step, ensuring that investments are made based on progressively validated insights.
