When developing large-scale software systems, integrating with legacy or third-party systems is inevitable. However, integrating directly with these systems often leads to unintended consequences, such as introducing technical debt, complexity, or even vendor lock-in. This is where an Anticorruption Layer (ACL) becomes essential. By acting as a mediator between systems, it shields your core application from the complexities of external systems. Let’s dive deep into the techniques for building an effective Anticorruption Layer and see how it helps your architecture.