# Hexser Book
Welcome to the Hexser Book — the official guide to building robust, maintainable Rust applications using Hexagonal Architecture (Ports and Adapters) with the `hexser` crate.
Hexser gives you:
- Zero-boilerplate architectural patterns powered by traits and derives
- Graph-based introspection and validation of your architecture
- Rich, actionable error messages
- A gentle on-ramp with tutorials and examples
If you’re familiar with Rust but new to Hexagonal Architecture, start with Getting Started, then explore Core Concepts and Tutorials.
Useful links:
- Crate README: ../../README.md
- Architecture Decision Records (ADR): ../adr/0001-hexagonal-architecture.md
- Architecture Guide: ../ARCHITECTURE.md
- Tutorials (in-repo): ../../tutorials/README.md