As of October 2024, the service was available to businesses based in 18 countries: Austria, Belgium, Cyprus, Denmark, France, Germany, Hungary, India, Republic of Ireland, Italy, Japan, Luxembourg, Netherlands, Portugal, Spain, Sweden, Switzerland, United Kingdom, and the United States.

Amazon Pay provides the option to purchase goods and services from websites and mobile apps using the addresses and payment methods stored in the Amazon account, such as credit cards or a direct debit bank account or the Unified Payments Interface (UPI) in India.

[6] Amazon Pay Express is a payments processing service for simple e-commerce use cases on websites.

It is built on Amazon Pay but without requiring a full e-commerce integration,[7] it can be used to create a button that can be copied and pasted onto a website or added via a WordPress plug-in.

[8] It is best suited for merchants selling a small number of products with a single item in each order, such as a digital download.

CBA could manage several aspects of the transaction, including order processing, promotional discounts, shipping rates, sales tax calculation, and up-selling.

[12][citation needed] In 2013 Amazon acquired GoPago's technology (mPayment) and hired their engineering and product teams.