Link: How to go about getting a credit card processor

How to go about getting a credit card processor
I would say that if you are building a SAAS kind of business with recurring payments, you absolutely need a processor that supports some sort of vault. A vault is a secure store of credit cards numbers on the credit card operator’s own servers. Several of them do that now. Braintree for one.

Due to new security requirements from the credit card associations (Visa and M/C) it really is not feasible for small operators to store the card details locally anymore. So if you are developing your application with credit cards stored in your database, be aware you will need to change this.