Do I need a header Access-Control-Allow-Origin: * for normal website?

I understand that the header Access-Control-Allow-Origin: * need for sites that allow you to connect your scripts on other sites? Roughly speaking a normal website-the business card which anyone not how to share it is not necessary?
April 19th 20 at 12:36
2 answers
April 19th 20 at 12:38
April 19th 20 at 12:40
For example, it may be necessary to complete the work saved copy of the page from the cache search engine (although you could not specify *, and explicitly listed domains).

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