Introduction to
Unified Checkout

Unified Checkout
provides a single interface with which you can accept numerous types of digital payments.
Unified Checkout
consists of a server-side component and a client-side JavaScript library.
The server-side component authenticates your merchant identity and instructs the system to act within your payment environment. The response contains limited-use public keys. The keys are for end-to-end encryption and contain merchant-specific payment information that drives the interaction of the application. The client-side JavaScript library dynamically and securely places digital payment options onto your e-commerce page.
The provided JavaScript library enables you to securely accept many payment options within your e‑commerce environment.
Unified Checkout
can be embedded seamlessly into your existing webpage, simplifying payment acceptance.
When a customer chooses a payment method from the button widget,
Unified Checkout
handles all of the interactions with the digital payment that was chosen. It also provides a response to your e-commerce system.
The figure below shows
Unified Checkout
with customer checkout payment options.

Figure:

Button Widget
Example of the button widget interface and flow with various payment
                    options.
For examples of different payment method UIs through
Unified Checkout
, see Unified Checkout UI.