In PCI DSS terms, if a merchant is eligible for SAQ A they are all but considered compliant. 

Interesting then to see that 're-directed' payment pages are a factor often cited when it comes to e-commerce 'cart abandonment'. How much should we put perceived security over customer usability? 

Hackers are also finding ways around the security of a redirect. Read our blog for more information on the security of outsourced payment models.