How to Migrate Laravel Apps to Symfony by Swapping Adapters, Not Rewriting Code

Migrating a Laravel application to Symfony can take quarters or even a year, but the timeline largely depends on how tightly business logic is coupled to the framework. Most Laravel apps mix domain rules with framework-specific code like Eloquent models and controllers, making separation the primary cost driver of any migration. The recommended approach is to first extract business logic into plain PHP classes that depend on interfaces rather than Laravel internals, while still running on the existing Laravel setup. Once that separation is complete, moving to Symfony becomes a matter of rewiring adapters — controllers, service providers, and infrastructure bindings — rather than rewriting core application rules. This architectural discipline, often associated with hexagonal or clean architecture, allows teams to migrate one route at a time with far lower risk.