In this lecture I discuss the history of this particular certification, which was formerly known as Salesforce Certified Developer 401. I discuss how there are no pre-requisites for this certification exam. I also review other certification paths and where this particular certification resides along the learning path.
Platform App Builder Exam Guide - https://trailhead.salesforce.com/help?article=Salesforce-Certified-Platform-App-Builder-Exam-Guide
Dev 401 Course Info From Salesforce - Check Out The Price! - https://www.salesforce.com/assets/pdf/datasheets/DS_DEV401.pdf
Destination Success - https://www.salesforce.com/trailheadx/