Competitor Analysis for Ecommerce SEO

Your business competitors are the brands you lose sales to. Your SEO competitors are whoever ranks for your keywords, and these are often completely different lists. A media publisher running a "best [your product]" roundup is an SEO competitor even if they sell nothing. An affiliate comparison site occupying three spots on page one for your category terms is an SEO competitor. You need to beat them in Google before worrying about beating them in revenue.

This distinction matters for how you approach the work. When you analyse a business competitor, you look at pricing, product range, and brand. When you analyse an SEO competitor, you look at their backlink profile, content structure, and the specific keywords driving their organic traffic. The questions are totally different.

Manual SERP checks work for a starting list, but they don't scale. For a proper view, use Ahrefs "Competing Domains" report (under Site Explorer) or SEMrush "Organic Competitors". Feed in your domain and both tools show you which other sites rank for the same keywords as yours, ranked by the degree of overlap.

What you're looking for: domains with high keyword overlap and organic traffic significantly above yours. These are the sites whose strategies are worth reverse-engineering. A domain ranking for 80% of your keywords but pulling 3× your traffic is doing something differently on content, links, or both.

• —Ahrefs Site Explorer → Competing Domains: shows overlap by shared keyword count
• —SEMrush Organic Research → Competitors: similar view with position distribution
• —Manual SERP checks for your 10 most important keywords: fast, free, tells you who's actually there today
• —Look beyond direct retail competitors — publishers, affiliate sites, and marketplaces often dominate category terms

A keyword gap analysis answers one question: what are your competitors ranking for that you're not? In Ahrefs, this is the "Content Gap" tool under Site Explorer. Enter your domain plus 2–4 competitors and it shows keywords they rank for and you don't. In SEMrush it's the "Keyword Gap" tool. Run this at least quarterly.

Filter the output aggressively. You're not interested in every keyword a competitor ranks for, just the ones with buying intent and realistic traffic potential. Filter by search volume over 100, keyword difficulty under 40, and words containing commercial modifiers like "buy", "shop", "cheap", "review", or "best". What's left is your actual opportunity list.

Keyword gaps tell you which terms to target. Content gaps tell you which entire pages or sections you're missing. Go into Ahrefs or SEMrush and pull a competitor's top pages by organic traffic. Work through their top 30. For each page ask: do we have something equivalent? If not, that's a content gap.

Common content gaps for ecommerce stores: subcategory pages they have that you don't ("men's waterproof hiking boots" vs your catch-all "hiking boots" page), comparison or "best of" content ("best trail shoes under £100"), size or spec guides, and brand-versus-brand pages ("Nike vs Adidas running shoes"). These pages earn enormous long-tail traffic and are often pure buying-intent searches.

Backlinks are still one of the strongest ranking factors for competitive ecommerce terms. The backlink gap is simply: which high-quality sites link to your competitors but not to you? Those sites have already shown they're willing to link to a business in your space, so they're the best possible outreach targets.

In Ahrefs, use the "Link Intersect" tool (under "More" in Site Explorer). Enter your domain and 3–5 competitors. The tool shows referring domains that link to competitors but not to you. Sort by domain rating (DR) descending. Focus on DR 40+ sites because those are the links that actually move rankings.

• —Ahrefs Link Intersect: best tool for finding sites that link to competitors but not you
• —SEMrush Backlink Gap: equivalent feature, slightly different interface
• —Prioritize DR 40+ referring domains, since below that the link equity is marginal
• —Group targets by type: editorial coverage, roundup posts, resource pages, industry directories
• —For each target site, find the specific page that links to your competitor and understand why they linked

Google's search results pages look nothing like they did five years ago. Beyond the standard blue links, there are featured snippets, image carousels, shopping results, video boxes, People Also Ask, and local packs. Each of these is a ranking opportunity, and for most ecommerce stores, SERP features are barely touched.

Check which SERP features your competitors own. If a competitor owns the featured snippet for "how to clean hiking boots" and you sell hiking boots, that snippet drives warm traffic to their content, and from there, potentially to their products. Featured snippets usually go to pages with clear, concise answers structured in lists or short paragraphs. Reformat your existing content to compete for these.

• —Featured snippets: reformat relevant blog and guide content with clear H2/H3 questions and concise answers
• —Shopping results: ensure product feeds are correctly set up in Google Merchant Center
• —Image carousels: optimize product image alt text and filenames for relevant search terms
• —People Also Ask: create FAQ sections on category pages targeting common questions in your niche
• —Video results: consider producing short product demos or how-to videos for high-traffic informational terms

Competitor analysis is easy to drown in. You can spend weeks pulling data and end up with a 500-row spreadsheet that no one acts on. The discipline is in deciding what not to chase. Every finding you surface should be scored by traffic potential and difficulty, then put in a queue.

The practical rule: pick your top 3 content gaps and top 3 link opportunities and work exclusively on those for 60 days before revisiting. That focus produces results that a broad, unfocused crawl through competitor data doesn't. Three well-executed content pieces and three quality links outperform twenty mediocre attempts every time.