A capable SEO company tracks a defined set of metrics, not a single number. Each one answers a different question: are people finding the site, are they engaging with it, is the site technically sound, and is search traffic producing business results. Here is the metric set a competent provider should be watching and what each one tells you.
Organic traffic and clicks
Organic traffic is the number of sessions that arrive from unpaid search results. Within that, total clicks from Google Search Console is the cleanest signal, because it comes directly from Google’s own data rather than an analytics estimate. If clicks are trending up over weeks and months, the work is producing visibility. An SEO company should segment this traffic by landing page and by branded versus non-branded queries, since growth in non-branded clicks shows the site is reaching people who did not already know the brand.
Keyword rankings and visibility
Rankings track where the site appears in search results for specific terms. A single keyword position is noisy, so most companies track a portfolio of target keywords and report overall visibility: how many terms rank on the first page, and whether the set is moving up or down. Rankings matter as a leading indicator, often shifting before traffic does, but they are a means to an end rather than the goal itself.
Impressions, average position, and click-through rate
Search Console reports impressions (how often the site appeared in results), average position, and click-through rate (CTR), the share of impressions that turned into clicks. Reading these together is useful. High impressions with low CTR usually means the page ranks but the title and description are not compelling, or the query intent does not match the page. This is one of the clearest places where a metric points directly to an action.
Conversions and revenue
Traffic only matters if it leads to outcomes. An SEO company should track organic conversions, the form submissions, calls, sign-ups, or purchases completed by visitors from search, and where possible the revenue or lead value tied to them. This is the metric that connects SEO to the business. Reporting leads, revenue, and cost per acquisition is more meaningful than reporting traffic alone, because traffic can rise without producing any customers.
Engagement signals
Engagement metrics show whether visitors find the page useful after they land. These include time on page, pages per session, scroll depth, and bounce or exit behavior. No single engagement number is decisive, but a pattern of visitors leaving a page immediately suggests the content does not match what the searcher wanted. A good provider uses these signals to decide which pages to improve.
Technical health and Core Web Vitals
Core Web Vitals are Google’s measures of page experience, based on real user data: Largest Contentful Paint for loading speed, Interaction to Next Paint for responsiveness, and Cumulative Layout Shift for visual stability. Alongside these, an SEO company should monitor crawl and indexation status, which pages Google has actually indexed, plus broken links, mobile usability, and site errors. These metrics catch problems that quietly suppress rankings regardless of content quality.
Backlink profile
The backlink profile is the set of other sites linking to the site being optimized. A provider should track the number of referring domains and, more importantly, their quality and relevance, along with any sudden loss of links. Growth in links from credible, topically related sites supports authority; a spike in low-quality links can be a warning sign.
Why the full set matters
No single metric tells the whole story. Rankings can rise while conversions stay flat. Traffic can grow on terms that never produce customers. A site can convert well but slowly lose technical health. A trustworthy SEO company tracks the whole set, explains how the metrics relate, and ties the work back to business outcomes rather than reporting one favorable number in isolation. When you evaluate a provider, ask which metrics they track, how often they review them, and how each one connects to leads or revenue.