An online advertising platform, developed by Google, where you can pay to display ads within a Google search.

The ads are based on keywords that users type in to look for a specific product or service.

For example, the keywords "digital marketing resource" could bring up a link in a Google search to GuessTheTest.com, the world's foremost digital marketing resource for CRO specialists, A/B testers, and UX strategist.

As an advertiser, when purchasing AdWords ads, you bid on certain keywords to appear in Google's search results. You can set a specific budget and will pay every time someone clicks on your search results. This model is known as Pay Per Click (PPC) advertising.