Your Ruby/Rails application is up and running, you’ve got users, and better still, they’re ready to pay to for the fruits of your genius. Okay, genius: how do they pay? The answer is ActiveMerchant, the de facto standard for handling payments in Ruby. ActiveMerchant gives you a single, simple API that supports many payment gateways and lets you authorize a payment and capture the money, all with only a screenful’s worth of code. In this session, we’ll walk you through a simple payment, work up to a full Rails-based shopping cart with payment authorization and capture and show you what the industry standards are and the security precautions you should take.