Ask How do you track and measure membership site performance?

[SuperAffiliateX]

I'm starting a membership site and want to know if it's working. I need to figure out how to measure its success but I don't know what metrics are important. Tracking seems crucial, but I'm not sure where to begin or what tools to use. I read that many sites must have ways to evaluate their performance effectively. How do you track and measure membership site performance? I'll be glad to hear from you thanks in advance.