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Via Duncan: (italics mine)

There was, indeed, a mention of J2EE - specifically the one where they said they threw most of it out! And a mention of SOA - the tiny line between two boxes on one slide connecting the 'Transaction Platform' to the 'Fraud' system!

The rest of the slides talked about sensible engineering practices such as cacheing, partitioning, statelessness, event-driven architectures and horizontal scaling.

The talk summary is a must read IMO. Everyone knows that Ebay handles serious load, but did you know how much? (Answer: 212 million registered users, 1 billion photos, 1 billion page views a day, 105 million listings, 2 petabytes of data, 3 billion API calls a month). 15,000 application servers, running Websphere (Java 1.3.1) And the specifics about J2EE were "use servlets, JDBC, connection pools (with rewrite). Not much else."