Butter means end-user experiences that are frictionless and joyful. For example, I recently went to China and was blown away by the QR Code experience — straight butter wherever you go, linking the real world to the online world. Duolingo is Butter for Learning. Nurx is Butter for Health. Coinbase is Butter for Crypto. Amazon Prime is Butter for e-Commerce.

“The Butter Thesis” (via AVC)