PPC (Pay-Per-Click) is a digital advertising model where advertisers pay a fee each time their ad is clicked. Essentially, you're buying visits to your website, rather than earning them organically. Google Ads and Facebook Ads are popular PPC platforms.

PPC works by bidding on specific keywords or target demographics. When users search for those keywords or match your target criteria, your ad may appear. If the user clicks on the ad, you pay a set amount based on your bid and the competition for that keyword.

PPC costs vary based on several factors like the platform, industry, competition for keywords, and targeting options. On average, Google Ads can cost anywhere from a few cents to several dollars per click, depending on how competitive the keyword is.

Quality Score is a metric used by Google to rate the quality and relevance of your ads, keywords, and landing pages. Higher Quality Scores can lead to lower CPCs and better ad positioning.

Ad relevance measures how closely your ad matches the search intent of users and how relevant it is to the keywords you're targeting.

A conversion is a desired action taken by a user after clicking an ad, such as making a purchase, signing up for a newsletter, or filling out a contact form.