Why is a different title value displayed when pasting a link?

Question

1C-Bitrix

The problem is, let's say there is a site, site.ru and its title when we open it "The best site", but when we throw this link to someone in VK or somewhere else, then when we paste it, when it is formatted in the best view, the title becomes " Website builder service", I did a search on the page and I have a news feed where it is in the heading "Website builder service", I don’t quite understand how it is transmitted and in general what does it have to do with it, can you tell me?

Answer 1

Because use open graph markup)