Often, we need interoperability or coexistence between legacy and modern applications. This design provides an easy solution for this by introducing a facade between modern and legacy applications. This design pattern ensures that the design of an application is not hampered or blocked by legacy system dependencies:
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Problem: New systems or systems in the process of migration often need to communicate with the legacy system. The new system's model and technology would probably be different, considering that old systems are usually weak, but still, legacy resources may be needed for some operations. Often, these legacy systems suffer from poor design and poor schema designs. For interoperability, ...
