We’ll use a lot of terms to describe conversions and the people that visit your online property. They are meant to provide an example in each instance, and are not meant to be definitive. For instance, if we say “improve the performance of your website” that could also be applied to improving the performance of your: website, landing page, web application, registration form, etc.
Likewise, when we talk about a visitor or user, we use them interchangeably (unless otherwise noted) to denote a person who is using your online property.
We’ve taken these liberties to improve the readability of the document and maintain flow. Please know that when the authors land on a word like users they routinely say in their head, “or visitors, or registered users, or…” Thank you for obliging us in this liberty.