Quick gut check: when was the last time anything on your website actually changed? Not a typo fix — a real update. New proof, new content, new structure.
If the honest answer is somewhere past six months, you are not just due for a refresh. You are actively losing ground on two fronts at once: traditional search, and the AI answer engines that are quietly taking a bigger share of how people find businesses.
Why six to twelve months is the real deadline
Google’s crawlers and AI models both use freshness as a trust signal. A site that has not changed in a year reads as either abandoned or irrelevant — even if the business behind it is thriving. Competitors who publish, update, and add proof points regularly get rewarded with more frequent crawling, more indexed pages, and more chances to be the source an AI model cites. Six to twelve months is not an arbitrary number. It is roughly the point where a stale site starts losing visibility faster than a refreshed one gains it.
What “behind” actually looks like
Three quick checks. If any of these are true, the clock has already run out.
- Your last blog post, case study, or news update predates your last haircut. Static content signals a static business to both Google and AI crawlers.
- Your site does not answer the questions people actually ask. No FAQ content, no structured Q&A, nothing an AI model can lift and cite directly.
- Your credentials, licenses, and proof points are buried in a PDF or an image. Machines cannot read what they cannot parse. If it is not plain text, it does not count.
SEO decay is the part everyone already knows about
Rankings are not static. Competitors publish, algorithms shift, and a page that ranked well a year ago slowly slides as fresher, more complete pages take its place. This part of the problem is old news — most businesses at least know they should be doing something about it, even if they are not.
AEO decay is the part almost nobody is tracking yet
Answer Engine Optimization — getting named and cited inside answers from ChatGPT, Perplexity, and Google AI Overviews — runs on the same freshness logic, and almost no one is watching it. We wrote a full breakdown of how AEO works and how to get cited, but the short version for this piece: AI models favor sources that are current, structured, and verifiable. A site frozen in place is not just outdated. It is actively being passed over in favor of a competitor’s site that got rebuilt or refreshed in the last year.
The update cycle that actually holds up
You do not need to rebuild the site every six months. You need to touch it with intent on that cadence:
- Every month: new proof — a case study, a review, a result, a piece of content that did not exist before.
- Every quarter: a real look at what is ranking, what is not, and whether your FAQ and structured content still match what people are actually asking.
- Every 6-12 months: a full audit of the technical foundation — site speed, crawlability, schema markup, and whether the site is still built the way search and AI engines reward today, not the way they did when it launched.
If nobody owns that cadence, it does not happen. That is usually not a tools problem. It is a senior-judgment problem — someone has to decide what changes and why, on a schedule, whether or not it feels urgent that week.
This is exactly the kind of ongoing ownership a fractional CMO seat is built to hold. Let’s look at where your site stands →
How often should a website be updated for SEO?
At minimum, every 6 to 12 months for a full technical and content audit, with smaller updates — new proof, new content — happening monthly. Sites that go longer than a year without a real update typically see rankings slide as fresher competitor pages take their place.
What is the difference between SEO decay and AEO decay?
SEO decay is a drop in Google search rankings over time as competitors publish fresher, more complete pages. AEO decay is the AI-search equivalent: losing citations inside ChatGPT, Perplexity, and Google AI Overview answers because your site is not current, structured, or verifiable enough for AI models to trust and quote.
How do I know if my website is falling behind on AI search?
Check three things: whether your last real content update was more than six months ago, whether your site has structured FAQ content an AI can quote directly, and whether your credentials and proof points are published as plain text rather than buried in images or PDFs.
