What is structured Data?

[daica85]

Hi Everyone, i need help for structured data and rich snippets, how to activate this, how many days google take on show on search results?
Please Help...

Structured data refers to kinds of data with a high level of organization, such as information in a relational database. ... Structured data markup is most easily represented in JSON-LD format, which stands for JavaScript Object Notation for Linked Data.

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