What is micro data in SEO?
 

What is meant by Micro Data in SEO? Is it part of ON page or OFF page optimization?

microdata is one of three code languages designed to provide search-engine spider programs with information about website content. To understand how this works in practice

It is a part of an on page optimization.
Microdata means it is an HTML data which use for basically Search Engine Spider.

It is an HTML data with information about website content

Aside from making it easier for search engines to properly categorize your site's content, marking up your pages with schema microdata can also be used to define and display rich snippets of your content in SERPs. Contrary to common misconception, Google does in fact use schema markup to display rich snippets.

Microdata or Structured Data is the next big thing for website SEO, start using Microdata on your site and improve your web search presence.

Microdata is an HTML specification used to nest Metadata within existing content on web pages.It is reserved for the "head" of a web page only and as such cannot be added into the body of a page.

Microdata is an HTML program with information about website content

Microdata is actually a way to represent what kind of data is present on a particular page of a website.

These is an hidden html code this can be inserted in web pages these is commonly refer as structured data.