| metric | A way to measure activity and performance in order to assess the success (or lack thereof) of an SEO initiative. |
| cpa | Cost per acquisition (or cost per action) refers to the price that a publisher pays to an advertiser for each unique user action the advertiser provides. |
| cgi | Common Gateway Interface (.cgi) agreement between HTTP server implementers about how to integrate gateway scripts and programs |
| competitor analysis | Competitor Analysis (SEO) is the process of researching your competitors in search to determine the best on-site and off-site search optimization strategies they use to rank high. |
| attribution | Attribution is the identification of user-actions that produced a desired result. |
