Why PrestaShop?
PrestaShop is a leading open-source e-commerce platform, known for its flexibility, powerful features, and zero licensing costs. Known for its intuitive interface, multi-language/currency support, and rich ecosystem of modules and themes, it’s ideal for SMEs creating customised online stores. PrestaShop 9.0 represents a significant milestone, delivering performance upgrades and essential architectural advancements reflecting modern development standards, scalability, and long-term maintainability.
What’s New in PrestaShop 9.0?
PrestaShop 9.0 brings complete core framework modernisation—a major leap forward, redefining how developers and store owners interact with the system.
Core Architecture Changes
Full Symfony Integration: PrestaShop 9 finalises its transition to the Symfony framework, providing a modern, stable foundation for future development. Legacy classes and outdated controllers have been deprecated or replaced, making the system more maintainable and aligned with best practices.
PHP 8.1+ Support: Requires PHP 8.1 or higher, ensuring compatibility with the latest features, improved security, and faster performance.
Doctrine DBAL: The Database Abstraction Layer improves database interactions, offering better abstraction, query building, and testability—especially beneficial for large-scale customisations.
Composer-Centric Development: Composer 2.x now plays a central role in the development workflow, handling dependency management, module integration, and autoloading seamlessly.. This simplifies version control and enhances CI/CD compatibility.
Back Office & Developer Enhancements
While focusing on backend improvements, merchants and developers will notice:
- Faster page loads and improved server response times
- Cleaner codebase through legacy logic removal
- Improved modularity for cleaner, standalone modules
- Stronger test coverage for stable, secure releases
Though UI changes are minimal, these under-the-hood updates drastically enhance store stability and maintainability.
Migration Guide: From PrestaShop 8 to 9
Method 1: One-Click Upgrade (Recommended)
Available Tools:
- Official 1-Click Upgrade Module: Standard PrestaShop upgrade module handling version transitions automatically
- MigrationPro: Third-party solution supporting migration with comprehensive data transfer
- PrestaShop Migrator: Alternative one-click solution for seamless upgrades
Advantages:
- Automated process with minimal manual intervention
- Built-in data integrity checks
- Reduced human error risk
- Faster migration time
- Automated backup creation
Autoupgrade Backup Process:
- BackupInitialization: Process start, clearing leftover temporary files
- BackupFiles: Complete backup of store files, themes, modules, images, and custom code
- BackupDatabase: Creates a complete backup of the entire database, including all tables and stored data.
- Let me know if you prefer a more concise or more detailed version.
- BackupComplete: Process finalisation with verification
Rollback Process: If the upgrade encounters issues, easily revert through the autoupgrade module’s “Rollback” section by selecting the backup archive and monitoring rollback progress.
Data Migration: Automatically handles transfer of products, categories, attributes, customer accounts, order history, CMS pages, configuration settings, images, and compatible module configurations.
Method 2: Manual Migration (Time-Intensive)
Fresh PrestaShop 9 installation followed by manual data migration.
Process Overview:
- Review Server Requirements: PHP 8.1+, MySQL 5.7+/MariaDB 10.3+, Composer 2.x, Apache/Nginx
- Complete Backup: Database, files, configuration, custom code
- Install PrestaShop 9.0: Fresh installation via Git and Composer
- Data Migration Strategy: Export from PS8 (products, customers, orders, CMS, configurations) and import to PS9 using native tools, third-party modules, or manual entry
- Module Compatibility Assessment: Audit existing modules, update compatible ones, identify alternatives for incompatible modules
- Theme Reconstruction: Rebuild themes using PS9’s updated architecture, adapt to Symfony requirements
- Comprehensive Testing: Front office (browsing, checkout, payments, mobile) and back office (product management, orders, reporting) functionality
Recommendation
Method 1(One-Click Upgrade) is strongly recommended for most merchants due to:
- Significantly reduced migration time
- Lower risk of data loss/corruption
- Automated handling of complex data relationships
- Built-in rollback capabilities
- Professional support availability
Consider Method 2 (Manual Migration) only for specific customisation requirements necessitating a fresh installation or when automated tools are incompatible.
Post-Migration Checklist
Regardless of the chosen method:
- Verify all critical store functions
- Test payment and shipping integrations
- Confirm SEO settings and URL structures
- Update DNS and SSL certificates if needed
- Monitor site performance and loading speeds
- Train staff on interface changes
Final Thoughts
PrestaShop 9.0 sets a strong course toward improved speed, enhanced security, and a more developer-centric ecosystem. Although upgrading requires planning and effort, long-term benefits are considerable—better performance, cleaner code, enhanced scalability, and modern tooling.
If running an older version, evaluate the long-term value of moving to Prestashop 9. If unsure about the process or lacking in-house developers, consulting with a PrestaShop expert or certified partner is highly recommended.
Still deciding whether to switch?
If you’re unsure whether moving from PrestaShop 8 to 9 is the right step for your store, we invite you to check out our detailed comparison and expert insights.
Discover the key benefits, potential risks, and real-world impact of migrating — and make an informed decision for your business.
