Answer
Dependency injection provides dependencies from outside the class. It improves testability and decoupling. Frameworks like Laravel use DI containers.
Quick Answer
Dependency Injection means passing dependencies into a class instead of creating them inside. Constructor injection is most common. DI makes code testable (swap real deps with mocks), reduces coupling, and makes dependencies explicit. Frameworks like Laravel use DI containers to auto-resolve dependencies. Without DI, code is hard to test and tightly coupled to specific implementations.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ