Those two efforts address different use cases. Web Monetization is an API for websites that wish to accept a stream of small micropayments as long as the user

Those two efforts address different use cases. Web Monetization is an API for websites that wish to accept a stream of small micropayments as long as the user is on the site. This suits pay-as-you-use content and service models and is a good substitute for advertising revenue as it's passive (no user interaction required). Web Payments (there are two APIs: https://www.w3.org/TR/payment-request/ https://www.w3.org/TR/payment-request/ and https://www.w3.org/TR/payment-handler/ https://www.w3.org/TR/payment-handler/) are discreet payments requested by the website and explicitly authorised by the user. These are best suited to use cases like ecommerce, donations etc.