Enterprise Laravel Development Checklist for Large Applications

Laravel is incredibly productive for building MVPs and small applications. However, when a Laravel application grows to hundreds of models, dozens of developers, and millions of users, the rapid-development patterns that worked early on become technical debt. Enterprise Laravel development requires a shift from rapid prototyping to strict, maintainable software engineering.

If you are building or scaling a large Laravel application, evaluate your team's practices against this enterprise checklist.

1. Code Structure and Strictness

• Domain-Driven Design (DDD): Standard Laravel places all Models in one folder and all Controllers in another. For enterprise apps, this is unmanageable. Reorganize your code into Domains (e.g., app/Domains/Billing, app/Domains/Inventory), grouping the models, controllers, and services that belong together.
• Strict Typing: PHP 8+ supports strict typing. Enforce declare(strict_types=1); in every file. Use explicit return types (e.g., public function calculate(): float) and property types everywhere. This eliminates entire classes of runtime bugs.
• Static Analysis (PHPStan/Larastan): Run Larastan at Level 8 or 9 on your CI/CD pipeline. Static analysis catches type errors, null reference exceptions, and undefined methods before the code is even run. It is non-negotiable for enterprise PHP.

2. Business Logic Isolation

• Fat Models, Skinny Controllers? No. In enterprise apps, both should be skinny. Controllers should only handle HTTP concerns (validation, routing). Models should only handle database relations and simple mutators.
• Action Classes / Services: Move complex business logic into dedicated Action classes (e.g., ProcessRefundAction) or Service classes. This makes the logic reusable across Web controllers, API endpoints, and Artisan console commands, and makes it incredibly easy to unit test.
• Form Requests for Validation: Never use $request->validate() inline in a controller for a large application. Always extract validation rules to dedicated Form Request classes to keep controllers clean and separate authorization from execution.

3. Reliability and Testing

• Automated Test Coverage: An enterprise application must have a robust test suite. Focus on Feature tests (HTTP request in, database assertion out) rather than granular Unit tests for maximum ROI. Aim for 80%+ coverage on critical business paths.
• Database Factories: Maintain strictly typed, up-to-date model factories. Your tests should never rely on hardcoded SQL dumps.
• Idempotent Jobs: Background jobs (queued via Redis or SQS) fail and retry automatically. Every queued job must be idempotent, meaning running it twice (e.g., a "Send Invoice" job) will not cause side effects (like charging the customer twice).

4. Observability and Performance

• N+1 Query Prevention: Enable Laravel's Model::preventLazyLoading() in your non-production environments to instantly catch and crash on N+1 query performance issues during development.
• Centralized Logging: Never rely on local storage/logs/laravel.log. Stream all logs to Datadog, Papertrail, or AWS CloudWatch. Implement custom Log channels with context (User ID, Request ID) to trace errors easily.

When you decouple business logic into actions, use strict types, leverage DTOs, and map out a clear domain structure, Laravel transforms from a rapid-prototyping framework into a stable, enterprise-ready powerhouse.

Need an experienced engineer to structure your enterprise application? Hire a Laravel developer to establish scalable architecture and reliable delivery for your product.