№ 24

Technical lexicon

Expertise · Expertise

SEO impact Medium

Effort Medium

Estimated ROI Good

Definition

Confident use of specialized vocabulary, defined where needed.

Why it matters for Google

Distinguishes the expert from the generalist; improves semantic matching.

Context within the E-E-A-T framework

Expertise

Demonstration of deep formal or technical knowledge.

Official reference

Google Quality Rater Guidelines (Sept. 2025) ↗

Section 3.4 · 2.5.2

Standard requirement

Full guide coming soon

Actions to implement

01
Define on first use
02
Glossary in appendix
03
No overuse

Combine with

Dp Degree Cf Certification Pb Publication Cf2 Speaker

Check off your progress, saved in your browser.

Define on first useGlossary in appendixNo overuseMeasure impact 30 days after implementation (GSC)Compare results at D+90 with a control pageAdd this element to the quarterly E-E-A-T auditDocument the implementation in the editorial logbook

Priority levelMedium

Implementation difficultyMedium

Time to result1 – 3 months

Pillar reinforcedExpertise

YMYL requirementStandard

QRG section3.4 · 2.5.2

How to measure success

Audit the page before / after implementation (Screaming Frog + GSC)
Track the average position on targeted queries in Google Search Console
Watch organic CTR at D+30 and D+90
Compare with a control page that did not get the signal
Add this element to a quarterly E-E-A-T audit grid