Utilize the input text as a context reference, choose the right relationship between AMEX and American Express from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

And they must think of part of AMEX volumes, American Express volume and part of PayPal volume.

Answer: operator