Knowledge check — Is this site built on WordPress?

You right-click on a webpage, choose View Page Source, and search the resulting code for wp-content. You get zero matches. What is the most reasonable conclusion?

Your accountant’s website is on a proprietary platform she pays $200 a month for. She wants to move to WordPress because her plan is doubling next year. The most important question for her to ask the current vendor is:

You’re looking at a competitor’s website and you want to know what platform it’s built on, but you don’t want to install anything on your browser. What do you do?