Link Building
Link Velocity
Link velocity is the rate at which a backlink dataset first observes new links or referring domains and marks previously observed ones as lost over a stated period.
What it means
A crawler's first-seen date is not necessarily the link's publication date, and a lost state may reflect page removal, access failure, Canonicalization or crawl scheduling. The report must retain the provider, scope, cadence, window and whether it counts links or normalized domains.
Why it matters
An observation-based definition separates real editorial events from crawler discovery lag and stops a temporary spike or loss from becoming automatic evidence of manipulation.
Example
One provider first observes 42 new referring domains and marks 11 lost during a 30-day window; the net observed change is 31, while publication dates and causes remain unverified.
Common mistakes
Do not combine providers, call first-seen creation time, subtract links from domains, infer a campaign or attack from one spike, treat lost as permanently removed or prescribe a universal safe rate.
How AYSA handles this
Signals reviewed
provider, target scope, snapshot, first seen, last seen, new state, lost state, normalized domain
Problem AYSA can identify
AYSA can detect an unusual observed rate, unit mismatch, provider change or spike dominated by duplicate or inaccessible sources.
Recommendation prepared
The series is normalized and sampled before any link-quality, outreach or policy investigation is proposed.
Approval preview
The user sees raw counts, net change, provider coverage, sampled sources and alternative explanations.
Execution
AYSA can maintain an approved monitoring definition and export evidence; it cannot control third-party link creation or prescribe a guaranteed safe velocity.
Verification
Later snapshots confirm whether sources remain live, reappear or were crawler-state changes rather than durable link events.
Limits
Web crawlers have incomplete, delayed and changing coverage, so the metric is a dataset observation rather than a complete web history.
Sources and further reading
- Semrush — Backlinks report fields — First-party vendor documentation
- Semrush — Referring Domains report — First-party vendor documentation
- Google Search Central — Spam policies for Google web search — Official search policy
Written by Marius Dosinescu. Reviewed by AYSA SEO Editorial Team · 2026-07-28 00:00:00.
Quick answers
Frequently asked questions
Is a backlink's first-seen date its publication date?
No. It records when that crawler first observed the link, which can be later than publication.
Does a sudden link-velocity spike prove manipulation?
No. News, migrations, crawler updates, syndication and spam can all change observations; cause requires separate evidence.
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