# Guides
source: https://developer.mastercard.com/mastercard-gateway/documentation/tutorials-and-guides/guides/index.md

Integration

##### Integrate EMV 3-D Secure {#integrate-emv-3-d-secure}

EMV 3-D Secure is a messaging protocol that helps verify your identity when shopping online with a debit or credit card.
Learn more Implementation

##### Device Payment Processing {#device-payment-processing}

Enabling secure, real-time payment processing directly from a device.
Learn more Implementation

##### Use Multiple Payment Data Sources {#use-multiple-payment-data-sources}

Payment details for card payments provided in several API requests.
Learn more Versions

##### Migration Guides {#migration-guides}

Why You Should Upgrade to Mastercard Gateway API v100.
Learn more