InfoWorld: So you have two CTOs for software?

Robert Brewin: Co-CTOs, that's why the "co" is in there. It's definitely a different kind of arrangement, and we do a lot of sharing. Both of us advise on both areas, and if you take a look at sort of the software platforms, the lines are blurring between what's an operating platform and what's an application. I mean a lot of the stuff you see on SOA and the Web 2.0 stuff, it's part of a platform, right? And if you want a network of a set of Web services that perform really well [and] are always available, it impacts on the operating system. And it impacts on the hardware. So it's all the way down to things like Niagara on a chip. Therefore, we do a lot of sharing. But if you had to pick sort of like the main domain, that would be it.

IW: What developments does Sun have planned in the area of Web services?

RB: We are doing two things. No. 1 is we're looking at completing and continuing development in the area of the WS-* stack, especially around the interoperability aspects with Microsoft. But in terms of when we start taking a look at the Web 2.0 space, REST [Representational State Transfer] starts looking more interesting.

IW: What are you going to be doing with REST?