A systematic guide to implementing JSON-LD structured data on a corporate site. Based on the official specs of Google Search Central and schema.org, it lays out the type-selection process for WebPage / Service / Organization / Audience / Country as a reproducible decision flow.
The fundamentals of structured data, JSON-LD, and the schema.org Data Model. Its role as a "contract" between search engines and content, the meaning of @context / @type / @id, the type hierarchy and property ranges, and how to embed it in HTML.
The type-selection process for implementing JSON-LD on the service page of a corporate site. The rationale for choosing WebPage as the root type, Service for mainEntity, Organization for provider, Audience for audience, and Country for areaServed, plus the rejected alternatives. Also includes the @id strategy and a decision tree for applying this to your own site.