As an application grows, organizing code purely by technical type can become difficult. Instead of one giant services directory, consider organizing important logic around business domains.

For example, an e-commerce application might contain features/orders, features/products, and features/payments, each with domain-specific components, services, validation, and types.

The goal is not to follow one universal folder structure. The goal is to create boundaries that allow teams to change one business capability without understanding the entire codebase.