The Automated Recurring Billing (ARB) API allows you to create, update, and cancel subscriptions programmatically. It also allows you to make use of Authorize.Net's secure data center to store payment information safely for recurring transactions.
To use the Choreos in this bundle, you'll need an Authorize.Net API Login Key and Transaction ID, which are used to authenticate your account. If you already have an Authorize.Net test account, you can find both keys by logging in to https://test.authorize.net/. Click Account. Then click API Login ID and Transaction Key. If you don't have an Authorize.Net test account, you can sign up for one at https://developer.authorize.net/testaccount/. After signing up for a test account, you should receive an email that contains credit card details that can be used for testing.