What is Schema Markup ?
Schema vocabulary (semantic vocabulary) can be used with many different encoding , including RDFa, Microdata and JSON-LD. These vocabularies cover entities, relationships between entities and actions, and can easily be extended through a well-documented extension model. Over 10 million sites use Schema.org to markup their web pages and email messages. Many applications from Google, Microsoft, Pinterest, Yandex and others already use these vocabularies to power rich, extensible experiences. To Know More visit :- https://www.schema.org/