How We Organize Files: A DevTree Overview

File organization is one of those topics that seems too obvious to need writing down — until you land in a repository that follows no discernible convention, and every basic navigation question turns into an investigation. A consistent structure isn’t glamorous, but it’s one of the cheapest investments a project can make in its own long-term readability.

This is a short map of the ground worth covering, and where to find the detail on each piece:

• The DevTree layout — the directory structure or organization of code and resources within a development environment, and what a well-organized repository actually looks like at the top level.
• The solution tree — see the same DevTree post’s section on src, the developer’s main working area, and the two common ways to slice it: component-focused or DDD-aligned.
• Production vs. non-production code — the distinction between code that’s actively used in a live environment and code used for testing, development, or experimentation, and why it’s worth being deliberate about where each lives.
• Repositories — guidance on how to split code across different Git repositories in the first place.
• Usage of #region — a breakdown of the pros and cons of using #region to organize code within a file.

None of these pieces are complicated on their own. Where they add up to something worthwhile is in being applied consistently across a codebase — so that the next person to open a repository already knows roughly where to look.