Configuration Management Load, validate, and manage application configuration across environments. Configuration Hierarchy Priority order (highest wins): Python: Pydantic Settings Environment-Specific Overrides Environment Variable Conventions Naming .env Files .gitignore Rules Configuration Validation Fail Fast on Startup Schema Validation for Config Files YAML/TOML Configuration YAML with Anchors TOML (pyproject.toml compatible) Secrets Management Runtime Resolution Docker Secrets Feature Flags 12-Factor Config Principles 1. Store config in the environment — Not in code 2. Strict separation…