B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
21%
21% -- purchase rate increase for Amazon (2026)
Amazon achieved a 21% increase in purchase rate using multivariate testing combined with machine learning, measured over 7 days.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
21%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
kirro.io
Primary
Tier C
https://kirro.io/multivariate-testing-software ↗
Source Article
Best Multivariate Testing Tools 2026 | Kirro
Quick comparison: the best multivariate testing software
Looking for A/B testing software that also handles multivariate testing (testing multiple page elements at the same time)? Not every tool does MVT the same way. The differences matter more than most comparison posts admit. Not sure if you even…
Original Research
kirro.io
· Original study ↗
Methodology
Documented case study cited by Kirro
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Amazon: 21% purchase rate increase. Source: kirro.io (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/amazon-mvt-purchase-lift-21
HTML Embed
<blockquote cite="https://lighthousedata.io/data/amazon-mvt-purchase-lift-21" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>21%</strong> -- purchase rate increase for Amazon<br><small>Source: kirro.io (2026) · <a href="https://lighthousedata.io/data/amazon-mvt-purchase-lift-21" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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