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To minimize downtime and ensure the high availability of critical services, an organization seeks to evaluate the readiness and effectiveness of its backup systems under real-world conditions. This evaluation aims to confirm that the backup infrastructure can seamlessly handle the full operational load in the event of a primary system failure without causing any interruption to current operations. Which testing method would BEST help the organization achieve this objective without impacting existing operations?

Answer 1

The best testing method for the organization to evaluate the readiness and effectiveness of its backup systems without impacting existing operations is **"Load Testing"** or more specifically, **"Shadow Testing"** (also known as "Parallel Testing").

### Explanation:
- **Load Testing**: This involves applying simulated loads to the backup systems to see how they perform under stress when the primary systems fail. This can help determine if the backup systems are capable of handling full operational workloads.

- **Shadow Testing**: This approach runs the backup system in parallel with the primary system without directing any production traffic to it. The backup system processes the same inputs as the primary system, but the results are not used in real operations. This way, you can observe the backup’s ability to handle the load without affecting the current operations.

This method allows the organization to ensure that the backup systems are ready to take over seamlessly in case of a primary system failure while minimizing risks and avoiding disruptions to existing operations.