Strapi v4 where is authentication custom controller?

Questions and Answers Strapi Backend
1
System Information
  • Strapi Version: 4.0.3

Hello,
I’m moving from v3 to v4 and I can’t find the auth.js file where we can add controllers for authentication. The case is we want to add OTP to the registration process and to the password reset process.

2

Where is it? I cant find it.