VISA is a credit card brand operated and managed by Visa International in San Francisco, California, USA.

VISA card was issued in 1976. Its predecessor was BankAmericard issued by Bank of America.

The full name of CAS is The Confirmation of Acceptance for Studies. CAS is a specific number. It is the same as the reference number that students got when applying to schools. When processing student visas, visa officers can enter this CAS number to see what your application is. Course information, personal information, and materials submitted when applying for the school.