What is Semrush

What it does

Semrush combines organic and paid research with content and technical tooling across a shared database.

• Keyword Magic Tool and Keyword Overview for large-scale keyword research and intent.
• Domain Overview and competitive research for organic and paid visibility.
• Position Tracking (rank tracking) with local and device granularity.
• Site Audit for technical SEO plus a Backlink Analytics and Backlink Gap toolkit.
• Advertising Research and PLA research for competitor Google Ads intelligence.

Where it fits in your stack

Semrush is the wide-angle research and competitive-intelligence layer. It overlaps heavily with Ahrefs on SEO, but pulls ahead when paid-search research matters — few tools show competitor Google Ads copy and PLA data as well. It complements first-party tools (Search Console, GA4) that Semrush cannot replace.

Strengths and limits

Strength: enormous feature breadth, strong keyword and PPC research, and a large keyword database. Limit: pricing that climbs fast once you add users and modules, a backlink index generally considered a step behind Ahrefs, and a busy interface that can overwhelm new users. Its traffic figures are estimates like any third-party tool.

How REO Rank uses it

We use Semrush for keyword research at scale, position tracking, and competitor research that spans both organic and paid. When a client runs Google Ads and SEO together, Semrush is where we map the overlap. We pair it with Ahrefs so link data is always double-sourced.

Why it matters

Semrush is one of the leading all-in-one digital-marketing and SEO platforms, spanning keyword research, competitor analysis, rank tracking, site auditing, backlink analysis, and tools that reach into paid search, content and social. It matters because it is among the most comprehensive commercial toolsets for both SEO and broader marketing intelligence — where some tools specialise, Semrush aims to cover the whole workflow, which is why it is a common choice for agencies and teams wanting one platform for research and reporting across organic and paid channels.

• A leading all-in-one SEO and digital-marketing platform
• Spans keyword research, competitor analysis, audits, rank tracking, backlinks, paid
• Popular for teams wanting broad coverage across organic and paid in one tool

What it is used for

Semrush's breadth is its defining feature: strong keyword research and keyword-gap analysis, competitive intelligence across both organic and paid (seeing competitors' keywords, ads and estimated traffic), site auditing for technical SEO, position tracking, and backlink tools, plus content and PPC features. This makes it a workhorse for competitive research and cross-channel planning. As with all such platforms, its traffic and ranking numbers are estimates from its own data, not exact Google figures — highly useful for comparison, market sizing and finding opportunities, but directional rather than definitive for your own site's performance.

• Keyword research and gap analysis across organic and paid
• Competitive intelligence on competitors' keywords, ads and traffic
• Site auditing, position tracking, backlink and content tools
• Estimates for comparison and opportunity-finding, not exact Google data

In practice

Teams use Semrush to research a market and competitors before building a strategy — mapping the keyword landscape, seeing what competitors rank and bid for, and finding content and link gaps — then to audit and track their own site's progress. Its cross-channel reach (organic plus paid) suits teams managing both. The choice between Semrush and rivals like Ahrefs often comes down to workflow preference and which datasets a team relies on most (Ahrefs is especially strong on backlinks; Semrush is especially broad across marketing). Either way, the principle holds: use its rich estimates for competitive and market intelligence, and Search Console for your own ground truth.

• Research the market and competitors before setting strategy
• Audit and track your own site's progress across channels
• Choice vs rivals is often workflow and dataset preference
• Use for competitive/market intelligence; Search Console for your own numbers