Evidence plays a critical role in auditing. Without quality evidence, auditors cannot arrive at the right conclusions about audit objectives. Evidence can be considered strong if it is persuasive. Persuasiveness, in turn, can be achieved if the evidence is relevant, sufficient, and competent. There is relevance if different results would generate different conclusions regarding the audit objective. There is sufficiency if there is enough evidence to arrive at a conclusion and there is competency if it is credible.