Google runs thousands of algorithm changes a year, but only a handful are large enough to move rankings in ways clients actually notice. An SEO company’s job during those events is not to panic or to chase every forum theory about what changed. It is to confirm what actually happened, separate signal from noise, and respond with the same discipline whether the update helped a client or hurt one.
In 2024, Google ran four confirmed core updates: March 5 to April 19, August 15 to September 3, November 11 to December 5, and December 12 to December 18. The March update was Google’s largest core update to date and ended up reducing unhelpful, unoriginal content in search results by roughly 45%, slightly more than the 40% improvement Google had originally projected. The August update was explicitly framed around feedback Google had received since the September 2023 helpful content update, which had hit small and independent publishers harder than intended. That is the kind of detail an agency needs to track in real time, not retroactively, because it changes how a site’s traffic dip gets diagnosed.
Why Algorithm Updates Require a Different Response Than Routine SEO Work
Day-to-day SEO work is incremental: fix a meta description, build a link, improve a page’s content depth. Algorithm updates are different because they can move a site’s visibility 20 to 40% in either direction within days, for reasons that are not always tied to anything the site did wrong. A capable agency treats an update as a distinct event with its own workflow, separate from the regular optimization cadence, because reacting to a core update with the same tactics used for routine on-page work usually makes things worse, not better.
Monitoring Systems: Catching Updates Before Clients Notice
Agencies track Google’s own update announcements through the Search Central blog and the Search Status Dashboard, cross-reference them against third-party temperature trackers (tools like Semrush Sensor or MozCast that aggregate ranking volatility across thousands of tracked keywords), and watch their own client rank-tracking data for volatility that doesn’t match a known seasonal pattern. The goal is to know an update is rolling out within hours, not when a client calls asking why traffic dropped. Google itself confirmed it ran the fastest spam update in its history in 2026, rolling out in under 20 hours, which makes same-day detection a practical necessity rather than a nice-to-have.
The First 48 Hours: Triage Without Overreacting
The instinct after a visible ranking drop is to start changing things immediately. That instinct is usually wrong. Most disciplined agencies follow a general two-stage approach in the first days after a suspected update: confirm the update is real and confirm which pages or sections moved, before touching anything. That means checking whether Google has officially acknowledged a rollout, checking whether the movement is broad (affecting many sites in the niche) or isolated to one client, and pulling segmented before/after data by page type, query category, and device. Sites that make sweeping content or technical changes in the first 48 hours after an unconfirmed ranking shift often end up fixing something that was never broken, while leaving the actual cause unaddressed. This is a general operating practice many agencies follow, not a fixed, universally mandated timeline; the right pace depends on how much data is available and how severe the impact is.
Differentiating Response by Update Type
Not every update calls for the same response, and treating them identically is one of the more common mistakes in this part of SEO work.
- Core updates (like March, August, November, and December 2024) reassess how Google’s systems weigh quality signals across the board. There is rarely a single fix. The right response is usually a content quality audit focused on the pages that lost the most visibility, checking for thin, outdated, or overly templated content, since core updates have repeatedly rewarded original, well-sourced material over reformatted or AI-bulk content.
- Spam-focused updates, including the August 2025 spam update that rolled out August 26 and ran for roughly four weeks, target specific manipulative patterns: scaled, low-value content production, abuse of expired domains repurposed for their existing authority, and what Google calls site reputation abuse (third-party content riding on an established site’s trust signals). A site genuinely caught in a spam update almost always has one of those three patterns present somewhere in its backlink profile or content production process, and the fix is removal or disavowal of the offending pattern, not a general content refresh.
- AI-related shifts are not a single named update but an ongoing change in how search results are constructed. A Seer Interactive analysis of more than 25 million organic impressions across 42 organizations found that average organic click-through rate for queries where an AI Overview appears fell from 1.76% to 0.61%, a 61% drop. Separately, Conductor’s 2026 AEO benchmarks, drawn from 13,770 enterprise domains, found that AI referral traffic accounts for roughly 1% of total site traffic, well under the 2% mark for most businesses. The practical response here is less about rankings and more about content structure: writing direct, extractable answers near the top of a page so the content has a chance of being cited inside an AI Overview, while not abandoning traditional ranking fundamentals, since organic search still drives the large majority of traffic in most industries.
Adjusting Strategy With Confirmed Data, Not Speculation
Once an update is confirmed and segmented data is in hand, the agency moves from triage to action. That usually means prioritizing fixes on the pages with the steepest, most consistent declines first, rather than spreading effort evenly across the site. A campaign success framework built before the update hits makes this step faster, because the agency already knows which metrics matter and can isolate the update’s effect from normal month-to-month variance. Roughly 85% of marketers in a 2025 Semrush survey of 481 respondents said AI had changed their search strategy to some degree, which is a useful reminder that “the algorithm changed” and “AI changed search behavior” are often two separate, simultaneous pressures on the same ranking data, and conflating them leads to the wrong fix.
Communicating Updates to Clients Honestly
Clients do not need a play-by-play of every minor fluctuation, but they do need a straight answer when a confirmed update affects their site, including when the honest answer is “we don’t have a fix yet, here is what we’re testing.” Agencies that downplay losses or take undue credit for gains during volatile periods erode the trust that makes the relationship work long-term. The clearest version of this communication ties directly back to whatever reporting cadence and metrics were already agreed on, rather than introducing new numbers only when something goes wrong.
Building Sites That Need Less Reaction in the First Place
The agencies with the calmest algorithm-update response are usually the ones that spent less time reacting to begin with, because they built on white-hat fundamentals from the start: genuinely useful content, clean technical implementation, and a backlink profile built from real relationships rather than manipulation. When a site already does these things, most core updates are a non-event. When a site has accumulated technical debt or thin content over years, almost any core update becomes a crisis. Sites recovering from a confirmed penalty or manual action follow a related but distinct process, covered in our guide on identifying and fixing SEO penalties, since penalty recovery and algorithm-update recovery use different diagnostic steps even though clients often confuse the two. For ranking losses that turn out to have nothing to do with an update at all, our piece on recovering lost rankings walks through the non-penalty, non-update causes, like content decay and competitor improvement, that agencies rule out first.
Algorithm updates are not going away, and Google has shown no sign of slowing the pace of core and spam updates. The agencies that handle them well are not the ones with the fastest reaction time. They are the ones with monitoring systems that catch updates early, a triage process that resists the urge to change things before the data is in, and a baseline of solid fundamentals that means most updates barely register in the first place. That combination, more than any single tactic, is what separates a calm, data-driven response from a scramble.
