What key factor should be considered when evaluating the effectiveness of strategies and tactics used in an incident response?

The effectiveness of strategies and tactics in an incident response is primarily measured by whether the established objectives have been achieved. This means evaluating the response based on specific goals set at the beginning of the incident, such as minimizing damage, ensuring safety, and restoring normal operations. If the planned objectives are met, it indicates that the strategies and tactics employed were effective.

While external feedback, subjective perceptions of leadership, and historical data can provide context and additional insights, they do not directly measure the success of the incident response in relation to the strategic goals. Thus, assessing the outcomes against clear, predefined objectives is crucial for a comprehensive evaluation of incident response effectiveness.