I am wondering if the Verification Code Challenge users usually get upon logging in their Salesforce Org can be considered as a kind of Two-Factor Authentication. The reason why I am asking this question is that I couldn't find any explanation re- the Verification Code Challenge, except in this post:
Verification codes are part of Salesforce security measures.
From the Salesforce Two-Factor Authentication document I can assume that this is true. I have my Password (first factor), and I have my email address (second factor) to which Salesforce sends a verification code. Still I'd like to verify my thoughts with community.