What do you need to make a strong password?

The best passwords are the ones you don’t even know yourself. Many platforms (e.g. iOS) and apps (e.g. LastPass and Dashlane) provide a password management serve. They automatically generate unique, secure passwords, encrypt and and store them, and autofill them when needed. That way, all you need to remember is one master password (or even better, some sort of biometric authentication like Touch or Face ID.)