A conversion rate optimization audit is a 360-degree evaluation of the user interface (UI) and user experience (UX) that tests how your webpage is converting views and actions into actual leads generating revenue, identifies factors that could be hurting your conversion rate, and helps you prioritize improvements.
Cro audits should be completed not once but regularly for example on some milestones like every 500 clients sign-ups or purchases, or at regular intervals, like every three or six months.