What should be the primary focus when writing user stories?

The primary focus when writing user stories should be on the client's business value and needs. User stories are a tool used in agile methodologies to capture requirements from the end user's perspective. They are meant to communicate what the user wants to achieve and why it is valuable to them. This focus helps ensure that the development team understands the purpose behind a feature and how it benefits the user, leading to solutions that align more closely with user expectations and business objectives.

Writing user stories with an emphasis on business value encourages collaboration between stakeholders and the development team, allowing for a shared understanding of the goals. This alignment fosters prioritization of work based on what will deliver the most impact for the user and the organization, ultimately leading to successful project outcomes.

In contrast, focusing on technical details, code efficiency, or the complexity of the business process may lead to a misunderstanding of the user's needs and could hinder the development of a solution that truly meets those needs. User stories should prioritize the "what" and "why" rather than the "how" of implementation.