PayPal is currently processing $1,571 worth of transactions per second in 17 different currencies on about 4,000 servers running Red Hat Linux.
Read more »Linux and open source software pay off for PayPal
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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?"
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