Why do production servers and test servers have to be similar?

There are two main reasons why production servers and test servers need to be similar:

  1. Mimicking real world condition for accurate testing.
  2. Smoother deployment process.
Mimicking real world condition for accurate testing:
The test environment is designed to uncover bugs and ensure the software functions as expected before it's released to users. If the test server is significantly different from the production server (hardware, software versions, configurations), issues might not be caught during testing.

Smoother deployment process:
A similar production and test environment simplifies the deployment process. When the software is finally ready to go live, the transition from the test server to the production server becomes smoother.

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