Why is Passing data important in Laravel applications, and what problem does it solve for developers?

Why is Passing data important in Laravel applications, and what problem does it solve for developers? The key reason to understand passing data is that Laravel applications are usually composed of several layers that must work together predictably. Controllers and other handlers can pass arrays or compacted variables to views. Ignoring that boundary can lead to duplicated logic, poor security, unnecessary database work, or code that is difficult to test. Why it matters in practice: Laravel views separate presentation from request-handling and database logic, with Blade providing the framework's templating features. The specific focus here is passing data: Controllers and other handlers can pass arrays or compacted variables to views. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.