Executive Summary: Implementing Laravel Sanctum, Rate Limiting, and CORS properly for production APIs.

APIs are the backbone of modern SaaS, but they are also the primary attack vector. ### API Authentication with Sanctum Laravel Sanctum provides a lightweight authentication system for SPAs and simple APIs. For API tokens, always use hashed tokens in the database, which Sanctum handles automatically. ### Rate Limiting Always protect public endpoints (like login or webhook ingestion) with rate limits in `RouteServiceProvider`: ```php RateLimiter::for('api', function (Request $request) { return Limit::perMinute(60)->by($request->user()?->id ?: $request->ip()); }); ``` This prevents brute-force attacks and abuse of your server resources.