Every month we get a call from an SMB owner whose organic traffic dropped 30% over the last quarter and who is convinced their SEO provider stopped working. Sometimes that’s the issue. More often, the search landscape changed under them — and the work that was earning the traffic six months ago doesn’t earn it anymore.
Reason 1: Google rolled out an update
Google ships dozens of algorithm updates a year. Most are minor; a few (core updates, helpful content updates, spam updates) reshuffle rankings significantly across whole verticals. If your traffic dropped sharply on a specific date, check the SEO industry trackers (Search Engine Land, Mozcast) for an update on that date.
Reason 2: a competitor invested heavily
If a well-funded competitor entered your market or a long-time competitor finally invested in their site, your relative position shifts even if your absolute rankings hold. Audit the SERP for your top money keywords — if there are new sites in positions 1–5 that weren’t there six months ago, that’s your answer.
Reason 3: AI Overviews and zero-click searches
Google’s AI Overviews now show on a meaningful share of informational queries, which absorbs clicks that used to go to your blog content. The mitigation is to lean harder into the queries AI Overviews don’t cover well: local intent, transactional intent, complex multi-step decisions where buyers want to evaluate a real provider.