A global Payment Service Provider:
has office locations in multiple countries and in more than one region (meaningful presence)
has payment processing capabilities consisting of local and global payment methods
has local card processing (acquirer) connections in more than one region
has the ability to process and settle in multiple global currencies
Some examples of Global Payment Service Providers (amongst others): WorldPay, Ingenico, Adyen, SafeCharge, Checkout.com and Payvision.