PCI compliance is the leading industry standard for secure handling of payment card data, and is generally required for businesses accepting credit, debit or other payment cards, as well as the companies that supply them with services, software and hardware to process those payments.
The Payment Cards Industry (PCI) Security Standards Council (SSC) was formed in 2006 by five leading credit card companies, and sets security standards which provide the assurance which underpins payment processing arrangements and partnerships. For this reason, it is very common for banks to require businesses to demonstrate PCI compliance when they are handling sensitive customer payment data.