the main process of p>visa transaction: 1. when the customer pays, if there is no card transaction, show the card number, expiration time, delivery address and credit card verification code cw2 of the credit card! 2. The merchant swipes the card and enters the amount. The system submits a request for transaction authorization to the merchant bank, and for transactions without a card, it is entered through the keyboard. 3. the merchant bank sends the transaction authorization request to the visanet system. 4.visanet analyzes the card number in the authorization request, and then forwards the authorization request to the issuing bank. 5. The issuing bank refuses or agrees to the transaction. 6.visanet forwards the authorization reply of refusal or consent returned by the issuing bank to the merchant banking system. 7. The merchant bank forwards the authorization reply to the merchant. 8. The merchant completes the transaction according to the authorized response. 9. The merchant submits the transaction receipt to Shangguang Bank. 1. the merchant bank loans the merchant account, transfers funds to the merchant account according to the transaction, and submits the transaction settlement request to visanet. 11.visanet checkout, borrow the account of the issuing bank, lend the account of the merchant bank, and submit the transaction to the issuing bank. 12. The issuing bank adds a transaction to the credit card holder's account and sends the bill to the cardholder's collection address. 13. The cardholder receives the bill. 14. The cardholder repays the money. During the whole processing, the visa organization requires the merchants not to store the sensitive information of authorization, such as cw2 code.

: Visa, also translated as Visa, is a credit card brand, which is operated and managed by Visa International in San Francisco, California, USA. VISA card was issued in 1976, and its predecessor was Bank Americard issued by Bank of America. In June 217, the "217 BrandZ Top 1 Most Valuable Brands in the World" announced that Visa ranked seventh with a brand value of $11.999 billion.

on may 29th, 218, the "218 BrandZ Top 1 Most Valuable Brands in the World" was released, and VISA ranked 7th. In December 218, VISA was selected as one of the top 5 brands in the world in 218. In October 219, Interbrand ranked 55th in the Top 1 Global Brands list. On October 23, 219, the 219 Fortune Top 5 list was announced, and Visa ranked 43rd. On January 13th, 22, it was selected as the winner list of 22 Hurun to Shangyou products.