Medusa Development provides best practices and architectural patterns for building headless e-commerce applications with Medusa v2. It outlines guidelines for defining data models, authoring services that extend MedusaService, building robust workflows and steps with the Workflow SDK, handling errors with MedusaError, and exposing features through API routes, subscribers, and admin customizations. Reach for this skill when you need guidance on structuring commerce business logic, data models, and queries according to official Medusa framework conventions.