CRO can be highly effective when approached strategically. Done well, it helps you increase conversions without necessarily increasing ad spend, by optimizing for user needs, friction points, and persuasive elements like clear CTAs and faster pages. In fact, the
top conversion rate optimization agency has shown clients average revenue uplifts of around 3 % in month 1, 7 % in month 2, 14 % in month 3, and up to 22 % by month 4—demonstrating measurable, incremental gains based on structured testing and validation. That’s a strong testament to its ongoing effectiveness.