Astro Implementation Guide - Master Index

Quick Start

This guide provides a structured approach to building high-performance Astro sites through a single progressive path with three natural tiers:

• Foundation (Phases 0–4): Core setup — everyone starts here
• Build (Phases 5–8): Make it yours — components, content, QA
• Polish (Phases 9–12): Production-harden — performance, deployment, docs

Work through phases sequentially and stop when you’ve reached your goals. See ADR-033 for the rationale behind this model (it replaced the earlier MVP/Showcase dual-track model).

Phase Dependency Map

Foundation (everyone)
  Phase 0: Foundation
    → Phase 1: Content Architecture
    → Phase 2: Design System
    → Phase 3: Tooling
    → Phase 4: Skeleton

Build (make it yours)
    → Phase 5: Components
    → Phase 6: Sections
    → Phase 7: Content
    → Phase 8: QA

Polish (production-harden)
    → Phase 9: Performance
    → Phase 10: Deployment
    → Phase 11: Documentation
    → Phase 12: Post-Launch

Tier Overview

Foundation (Phases 0–4) — Everyone does these

Pre-configured in the template. Delivers a deployable site skeleton with no content.

• Astro + TypeScript + Tailwind + Biome
• Content Collections schemas
• Design tokens system
• Base layouts and structural components
• CI pipeline

Build (Phases 5–8) — Where you make it yours

Scope each phase to your project’s actual needs using the Essential / Recommended / Advanced labels within each guide.

• UI component implementation
• Page sections and layouts
• Content creation
• Quality assurance

Polish (Phases 9–12) — Production hardening

Stop here when you need an enterprise-grade deployment.

• Performance optimization and budget enforcement
• Deployment configuration
• Documentation and AI context
• Post-launch monitoring and maintenance

Phase Overview

“Completed” vs “Active” is from your perspective as a cloner, not the template’s. This template already ships a fully-built reference implementation of every phase (44 components, content collections, an e2e suite, performance budgets, CI, and deployment config). The Foundation phases below are marked “Complete” because they’re shared infrastructure you inherit as-is; the “Active” phases are the customization work you do to make the site yours (your components, your content, your QA pass). Read each active phase as a guided walkthrough, using the shipped implementation as the worked example.

✅ Completed Phases (Foundation)

Phase	Name	Scope	Status
0	Foundation	Essential	✅ Complete
1	Content Architecture	Essential	✅ Complete
2	Design System	Essential	✅ Complete
3	Tooling	Essential	✅ Complete
4	Skeleton	Essential	✅ Complete

🚧 Active Phases (Build)

Phase	Name	Scope	Effort	Critical Path
5	Components	Essential → Advanced	2-4 days	⚡
6	Sections	Essential → Advanced	2-3 days	⚡
7	Content	Essential	3-5 days	📝
8	QA	Essential → Advanced	1-3 days	✓

🚧 Active Phases (Polish)

Phase	Name	Scope	Effort	Critical Path
9	Performance	Essential	1-2 days	✓
10	Deployment	Essential	1 day	🚀
11	Documentation	Recommended	1-2 days	📚
12	Post-Launch	Recommended	1 day	🎯

Getting Started

1. Review Tech Stack: Check technology choices
2. Understand Budgets: Study performance targets
3. Set Up Structure: Follow directory layout
4. Begin Phase 0: Start with foundation decisions
5. Stop when done: Each tier has a clear deliverable — ship when it meets your goals

Additional Resources

📖 Topic Guides

• Accessibility Guide - WCAG AA compliance patterns
• Components Guide - Component architecture best practices
• Content Model Guide - Content Collections patterns
• Image Optimization Guide - Performance-first image strategies
• Testing Strategy Guide - QA and testing approaches
• Rollback Strategies Guide - Deployment safety patterns

💻 Code Examples

Each active phase includes practical code examples:

• Phase 5 Examples - Component implementations
• Phase 6 Examples - Section layouts
• Phase 7 Examples - Content patterns
• Phase 8 Examples - QA testing code
• Phase 9 Examples - Performance optimizations
• Phase 10 Examples - Deployment configurations
• Phase 12 Examples - Post-launch monitoring

📚 Reference Documentation

• Tech Stack - Complete technology overview
• Directory Structure - Project organization
• Budgets & Guardrails - Performance targets
• Optional Analytics - Tracking implementation
• Table Format Guide - Documentation standards

Common Patterns

• Islands Architecture - When to add interactivity
• Content Collections - Advanced content patterns
• Performance Patterns - Optimization techniques
• Component Patterns - Reusable UI patterns

Scope Decision Matrix

Need	Essential	Recommended	Advanced
Interactivity	Static HTML + CSS	CSS + minimal JS for simple state	Preact islands where justified
Testing	Manual checklist	Playwright critical paths	Full e2e suite + a11y checks
Components	Core UI only	Extended component library	/showcase style guide + full documentation
Documentation	README + basics	AI context updated	Comprehensive guides
Monitoring	Basic uptime	Lighthouse CI	RUM + error tracking

Support & Updates

• Changelog: See CHANGELOG.md in the repository root
• Issues: Create an issue in your project repo
• Updates: Check monthly for Astro updates
• Community: Astro Discord