Any
Out of all the unique visitors who visited your website, how many had an awesome first time experience? (this can be determined by tracking certain events. For example: and/or …created an account + gave you their email address + clicked on a certain feature + stayed more than 5 minutes + added an avatar picture + added their first and last name + finished the walk-through). [1]
[1] Retrieved May 21, 2021, from https://medium.com/growth-tribe/if-you-are-going-to-read-one-intro-guide-to-saas-metrics-this-is-it-b0f480716a4e
[2] Retrieved May 21, 2021, from https://www.quora.com/What-performance-metrics-does-VC-look-for-in-a-payment-fintech-startup
[3] Geckoboard. Retrieved May 21, 2021, from https://www.geckoboard.com/best-practice/kpi-examples/activation-rate/