What is the difference between a written and informal client brief?

• A. A written brief is structured and formal, while an informal brief is flexible and less structured.
• B. A written brief is the same as an informal brief.
• C. A written brief is shorter.
• D. A written brief cannot be edited.

Answer: (A)

The difference comes down to how information is captured and relied on during a project. A written brief is a formal, structured document that clearly spells out goals, scope, deliverables, audience, constraints, and timelines. It serves as an official reference that everyone can consult, helps keep stakeholders aligned, and can be versioned and updated as plans evolve.

An informal brief, on the other hand, is usually shared in a casual way—often verbally or as a quick note. It’s more flexible and less organized, capturing what’s needed to start work but without the same level of detail or sign-off. This makes it fast to produce, but it also leaves more room for different interpretations unless the details are later captured in a formal document.

So the key distinction is that the written brief is structured and formal, providing clarity, accountability, and a durable record, while the informal brief is flexible and less structured, offering quick guidance but with higher risk of gaps. The idea isn’t that the written brief can’t be edited—it's standard practice to update a formal brief as project needs change. The notion that a written brief is the same as an informal one or that it’s inherently shorter isn’t accurate.