When you provide the information in a meta tag, the information is used by the search engine to index a page as if someone is searching the same kind of information can get it easily.
You can add meta tags in different ways, depending on the tool you use to create and update your site.
You can also add your meta tags to your pages by hand. Meta tags should be placed within the <head> tags near the beginning of your page code, like this:
<head>
<title>your business name and page title<title>
<meta name="description" content="a description of your site">
<meta name="keywords" content="relevant keywords about your site">
</head>