No. Two-factor authentication is a newer security method that's built directly into iOS, macOS, tvOS, watchOS, and Apple’s websites. It offers a more streamlined user experience and is required to use certain features that call for enhanced security. Two-factor authentication is available to iCloud users with at least one device using iOS 9 or OS X El Capitan or later.

If you have Apple devices that can be updated to iOS 9 or later or OS X El Capitan or later, you should set up two-factor authentication instead. If you use two-step verification for your Apple ID, and then you upgrade to iOS 11 or later, or macOS High Sierra or later, your security settings may be automatically upgraded to two-factor authentication.

Two-step verification is an older security method that is available to users who don’t have Apple devices, can’t update their devices, or are otherwise ineligible for two-factor authentication.