Linux and open source software pay off for PayPal

When Scott Thompson left Visa to take the CTO role at PayPal in 2005, the Web company's data centre surprised him. "Wait a minute," he recalls saying, "they run a payment system on Linux?"

"I was pretty familiar with payment systems and global trading systems, but I just scratched my head when I came here," Thompson says. With his history of working on IBM mainframes and large Sun Solaris systems, the PayPal approach to computing seemed alien, especially for a company whose core mission was dealing with money.

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