How Does Google Find and Rank Websites?

You can't be found if Google doesn't know your page exists

In Lesson 2, we followed a homeowner in Austin, Texas, who needed someone to repair a broken water heater. We saw several ways the homeowner might discover a business: through a Google ad, an unpaid Google result, a Maps listing, or an AI answer.

That taught us something important about online visibility: people can come across a business in different places, and seeing it doesn't always mean visiting its website.

Why is that useful to know when you're doing SEO? Because it helps you ask a better question than “How do I get more visitors?” You can start by asking where people could find your business and what needs to work at each step. In this lesson, we'll focus on one of those paths: the unpaid website results on Google.

Let's return to ClearFlow Plumbing, our fictional business in Austin. Suppose the owner has just published a useful webpage about water heater repair. It explains the service, says where ClearFlow works, and makes it easy to get in touch.

The page is live. Someone with its web address can open it. But the owner searches Google and can't find it.

How can a page exist on a website and still not show up in Google?

The answer starts with how Google discovers webpages.

First, Google has to find the page

Think about ClearFlow's website. It has a homepage and a separate page about water heater repair. If the homepage has a link saying Water Heater Repair, a visitor can click that link to reach the service page.

Google can discover pages in a similar way, by following links from pages it already knows about. It can also learn about pages through other routes, such as a sitemap, which is a list of website addresses made for search engines.

Once Google discovers an address, an automated program called a crawler may visit that page to read what's there. Google's main search crawler is called Googlebot. The act of visiting and reading a page this way is called crawling.

You don't have to remember the name Googlebot right away. What matters is the idea: Google needs a way to discover a webpage and access its content before it can understand what that page offers.

Now imagine ClearFlow's new service page isn't linked from the homepage or any other page on its site. Google could still discover it another way, but the missing link removes one straightforward path. Adding a useful link helps visitors find the service and gives Google another route to discover it. It does not guarantee Google will crawl or show the page.

Finding the page isn't the same as showing it in search

Suppose Google has now visited ClearFlow's service page. Does that mean people will see it when they search?

Not yet. Google still needs to work out what the page is about and whether to include its information in a huge collection called the search index.

You can think of the index as an organized collection of information about webpages Google knows about. When Google looks for results to show someone, it searches this collection rather than starting from scratch across the whole internet.

The process of examining a page and possibly adding its information to that collection is called indexing.

For ClearFlow, Google might find that the page explains water heater repair in Austin. But crawling doesn't guarantee indexing. Some pages aren't added to Google's index, even if Google can access them.

This matters because a business owner can publish a helpful page and still need to check whether Google has included it. Before rewriting the page title again and again, it helps to check whether Google has indexed the page and why it might not have done so. Later in the Academy, we'll learn about a free Google tool called Google Search Console, which can help website owners investigate this.

Then Google decides which pages fit the search

Now imagine ClearFlow's page has been indexed. Our Austin homeowner types “water heater repair near me.” The words someone searches for are called a search query. Google looks for pages that might be useful for that query.

This is the stage people usually mean when they talk about ranking: Google chooses which results to show and the order in which to show them.

ClearFlow's page might be relevant because it discusses water heater repair and serves Austin. But other plumbing businesses may have useful pages too. Google uses many signals when choosing results, and the person's location and the words they search can affect what they see. There isn't one permanent Google position for ClearFlow's entire website.

If the homeowner instead searches “why does a water heater make a strange noise?”, they may be looking for an explanation rather than a company to contact right away. A helpful article might suit that question better than a service page.

That difference matters for SEO.

The goal isn't to make one page appear for every search. It's to create a page that helps the person making a particular search.

Being indexed means a page may be considered for relevant results. It does not mean Google will show it for every search, or put it on the first page.

What can a business owner do with this knowledge?

Go back to ClearFlow's missing page. We now know that “it's published” and “it appears on Google” are not the same thing.

A useful first question is “Can Google find and access this page?” If important pages are difficult to reach through the website, making clear links to them is one practical improvement. If Google has already found the page, the next question is whether it's been indexed. And if the page is indexed but isn't attracting the right searches, the business can look again at how well it answers customers' needs.

These are different problems, so they call for different kinds of SEO work. Understanding that can save a business from spending time on the wrong fix.

You don't need to know how to repair an indexing problem yet. At this stage, you just need to recognize what might be missing and what question to ask next. The more technical tools and checks come later.