# Mastercard Checkout Solutions
source: https://developer.mastercard.com/mastercard-checkout-solutions/documentation/index.md

Developed by Mastercard and built upon EMV® Secure Remote Commerce standards^1^, Mastercard Checkout Solutions provides ecommerce solutions which offer guest checkout and card tokenization services that deliver the same security, convenience and control as offered in the physical world.

## How it Works {#how-it-works}

* Consumer provides their account, PAN, profile or personal details on the Integrator's site. An Integrator can be a merchant, payment gateway, issuer, eCommerce service provider or other service provider.

* The Integrator consumes services offered by Mastercard Checkout Solutions to provide checkout experiences to the consumer.

* For details on who can integrate and how they interact with Mastercard Checkout Solutions, refer to the Participants and Interactions section within each product.

Note: For the purpose of this documentation, all the entities performing integration will be referred to as an 'Integrator'.

![Mastercard Checkout Solution Overview](https://static.developer.mastercard.com/content/mastercard-checkout-solutions/documentation/images/main-diagram-mcs-5.png "Mastercard Checkout Solution Overview")

* To support Mastercard Checkout Solutions as a merchant or a Payment Service Provider(PSP) operating on behalf of a merchant, Integrators must comply with [PCI-DSS requirements](https://www.pcisecuritystandards.org/document_library/?category=pcidss&document=pci_dss).

## Products {#products}

Before you onboard, familiarize yourself with the programs that Mastercard Checkout Solutions offer.

### Click to Pay {#click-to-pay-br}

Built on EMV® Secure Remote Commerce standards^1^, Click to Pay is a guest checkout solution which gives consumers a simple, secure and consistent way to check out.


[Learn more →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/use-cases/click-to-pay/index.md)

### Secure Card on File {#secure-card-on-file-br}

Network tokenization and digitization solutions that replace Primary Account Numbers with a surrogate value.


[Learn more →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/use-cases/card-on-file/index.md)

### Mastercard Merchant Presented QR:SRC {#mastercard-merchant-presented-qrsrc-br}

A streamlined method for accepting card payments at the point-of-sale via merchant-presented QR codes, leveraging EMVCo QR and messaging standards.


[Learn more →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/use-cases/sqr/index.md)

### Guest Checkout Tokenization {#guest-checkout-tokenization-br}

Tokenize guest checkout transactions by replacing PANs with unique tokenized credentials.   

[Learn more →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/use-cases/guest-tokenization/index.md)

Mastercard **Token Authentication Service (TAS)** is a program to authenticate the transactions performed by cardholders during checkouts.
Mastercard facilitates authentication using payment passkeys or alternate authentication methods.   

[Learn more →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/token-authentication/index.md)

## Get Started {#get-started}

### Quick Start {#quick-start}

Learn how you can start your integration with Mastercard Checkout Solutions.   

[Read →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/gettingstarted/index.md)

### Onboard {#onboard}

Find out the steps required to onboard to Mastercard Checkout Solutions.   

[Read →](https://developer.mastercard.com/mastercard-checkout-solutions/tutorial/onboarding-sandbox/index.md)

### Glossary {#glossary}

Learn about the key terms in Mastercard Checkout Solutions.   

[Read →](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/glossary/index.md)

<br />

^1^ EMV Secure Remote Commerce (SRC) simplifies the online checkout process to make it consistent, convenient and secure. To learn more, see [EMV SRC standards](https://www.emvco.com/emv-technologies/secure-remote-commerce/).