Why is Lazy eager loading important in Laravel applications, and what problem does it solve for developers?

Why is Lazy eager loading important in Laravel applications, and what problem does it solve for developers? The key reason to understand lazy eager loading is that Laravel applications are usually composed of several layers that must work together predictably. Already-loaded models can have relationships loaded afterward when the application discovers it needs them. 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: Eager loading retrieves related data intentionally to reduce repeated relationship queries and avoid common N+1 query patterns. The specific focus here is lazy eager loading: Already-loaded models can have relationships loaded afterward when the application discovers it needs them. 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.