What's the biggest difference between Naver and Google AI search?

Google builds on an open web index; Naver centers on its own ecosystem (specifics vary, so check current docs).

Does schema.org markup work on Naver too?

schema.org is mainly a Google/Bing play. Naver's effect is a separate hypothesis; AUTHON even measures the no-change case.

Registration/verification through Naver's own channels such as Naver Search Advisor is the starting point (check current policy).

No. Different indexes and rankings mean AUTHON measures them separately as GVS and GVS-N.

External engine-behavior claims are marked confidence: unverified; verify against each engine's official docs before publishing.

Index basis: Google AI search builds on the open web indexed by Googlebot. Naver weighs its own ecosystem (blog, cafe, news, Knowledge-iN) heavily.
Submission/verification tools: schema.org structured data and Google Search Console are closer to a Google/Bing play; Naver has its own tools such as Naver Search Advisor.
Separate measurement: with different indexes and rankings, GEO performance cannot be summed on one axis — AUTHON isolates GVS (Google) and GVS-N (Naver).

External engine behavior changes often; verify against each engine's latest official docs before publishing.