What is Google Indexing?
Google indexing is the process by which Google's crawler (Googlebot) discovers a webpage, analyzes its content, and adds it to its enormous database — the Google Index. Once a page is indexed, it becomes eligible to appear in Google Search results.
If your URL isn't indexed, no one will find it through search — no matter how good the content is. That's why every SEO workflow starts with a simple question: "Is my page actually indexed?"