Some do, and some do not. Conversion rate optimization, usually shortened to CRO, is a related but separate discipline from SEO. Whether a given SEO company includes it depends on how the firm is structured and how broad its service list is. Before you assume CRO is part of an SEO contract, it is worth asking directly, because the answer varies widely from one provider to the next.
How SEO and CRO relate
SEO and CRO address two different parts of the same problem. SEO works to bring people to your website by improving how it ranks in search results. CRO works to turn those visitors into customers once they arrive, by getting more of them to complete an action that matters to your business, such as filling out a form, calling, booking an appointment, or making a purchase.
The two fit together naturally. SEO can deliver a steady stream of qualified traffic, but if the pages those visitors land on are confusing or hard to act on, much of that traffic leaves without doing anything. CRO closes that gap. Because the goals overlap, many agencies describe SEO and CRO as complementary services, and improvements made for one often help the other. A clearer, faster, easier-to-use page tends to keep visitors engaged longer, which can support search performance as well as conversions.
What CRO work involves
CRO is a methodical process rather than a one-time fix. It generally starts with reviewing how visitors currently behave on the site, then identifying where they drop off or hesitate. From there, the work typically includes several types of activity:
Testing is central. A/B testing compares two versions of a page or a single element, showing each to different visitors and measuring which one performs better. This replaces guesswork with evidence and is usually done one variable at a time so the cause of any change is clear.
Page layout and design are common areas of focus. This can mean rearranging content so the most important information is easy to find, improving readability, or making the page work well on mobile devices.
Calls to action receive close attention. CRO work often refines the wording, placement, and prominence of buttons and links that ask visitors to take the next step, so the desired action is obvious.
Friction reduction is another core task. Friction is anything that makes an action harder than it needs to be, such as long forms, unnecessary steps, unclear navigation, or too many choices on a single page. Removing or simplifying these obstacles tends to lift conversion rates.
Why some SEO companies include it and others do not
Larger, full-service digital marketing agencies frequently bundle CRO with SEO, paid advertising, content, and web development, presenting it as part of a complete approach to growing a website’s results. For these firms, CRO is one service among many, and it can be added to an SEO engagement or run alongside it.
Other companies focus strictly on SEO and treat CRO as a specialty handled elsewhere. There are also agencies that work on CRO exclusively. This is a legitimate way to operate, since CRO draws on skills in user experience, analytics, and structured testing that differ from the technical and content work at the center of SEO. A firm that does not offer CRO is not necessarily limited; it may simply have chosen to specialize.
What to ask before you sign
Do not assume CRO is included in an SEO proposal. Ask the company plainly whether conversion rate optimization is part of the service, and if so, what it covers. Useful questions include whether they run A/B tests, how they decide what to test, how they measure results, and whether CRO is built into the SEO retainer or priced separately.
If a company does not provide CRO, ask how they handle the gap. Some will refer you to a trusted specialist, and some will coordinate with a separate CRO provider you hire. The goal is a clear understanding of who is responsible for turning traffic into results, so that the visitors your SEO work earns are not wasted once they reach your site.