Cyrus Shepard

On-page experimentalist — founder of Zyppy SEO and a former public face of Moz.

Term

Cyrus Shepard

Field

SEO

Known for

Zyppy SEO; title-tag studies

Former

Moz

Who he is

Cyrus Shepard is the founder of Zyppy SEO and a former content and SEO lead at Moz, where he was one of the brand’s most visible educators. He has built his reputation on testing — running studies across large sets of pages to learn what actually moves rankings.

Why he matters

Shepard’s title-tag and on-page experiments are among the most-cited practical SEO studies of recent years. Rather than assert best practices, he measures them at scale and publishes the results, giving practitioners evidence instead of folklore for decisions like how to write titles and structure internal links.

Where you’ll see his work

Through Zyppy, Shepard publishes data-backed guides and runs consulting for content-heavy sites. His experiments on click-through rate, title rewriting, and internal linking are widely shared and frequently inform how careful teams approach on-page work.

How to use this

Use Shepard’s studies as a sanity check on your on-page assumptions — especially titles and internal links — then apply them through RGM’s on-page SEO and SEO guides.

Quick answers

Who is Cyrus Shepard?

Cyrus Shepard is the founder of Zyppy SEO and a former Moz content lead, known for rigorous, large-scale on-page and title-tag experiments.

What is Cyrus Shepard known for?

Data-driven SEO experiments — particularly studies on title tags, click-through rate, and internal linking — published through Zyppy SEO.

What is Zyppy SEO?

Zyppy is Cyrus Shepard’s SEO consultancy and publishing brand, known for experiment-based guides on on-page optimization.