Is 3DS1 SCA-compliant?

It's important to know that Strong Customer Authentication (SCA) is a mandate coming from PSD2 (which is a regulatory mandate), while 3DS2 is an authentication protocol update from the card schemes, which are commercial entities.

3DS1 and 3DS2 are both considered SCA compliant, but 3DS1 will eventually be phased out by the schemes in end of 2020.

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