Structured data is a big part of Google’s search results and discovery process and to make it easier for webmasters to understand what structured data Google has indexed from your web site, Google introduced a new section under the “Optimization” section of Google Webmaster Tools named “Structured Data.”
Structured data will show you all the rich snippets markup and other structured data markups Google discovered for your site. Google breaks down the dashboard reporting by three levels including site level, item type level and page level.
1. On the site level Google aggregates data by root item type and vocabulary schema. Root item type means an item that is not an attribute of another on the same page.
2. On the item type level Google provides per-page details for each item type. Google will also provide specialized preview columns to show more item markup.
3.On the page level Google shows all attributes of every item type on the given page. Google also shows a link to the Rich Snippet testing tool for that specific page.
CNAME Record Verification:
Google has also added yet another way to verify your domain names with Google Webmaster Tools. The new way is to simply add a CNAME record to your DNS. Google said they added this method for those who “are not able to create DNS TXT records for their domains.”