Helps find weaknesses
Search engines like Google update their algorithms regularly. Performing an SEO Audit allows you to discover these changes, determine if and how they have affected your website performance, and make changes accordingly.
Measures the effectiveness of your current SEO
Conducting regular SEO Audits allows you to compile data and metrics that future audits can be measured against. If you don’t have any information regarding the previous effectiveness of your SEO, you have no way of knowing whether your site engagement has improved.