I'm pretty sure they're referring to SecDB. There isn't much known about SecDB outside of Goldman, but I think the essence is that it:

1. Is a distributed data store for market positions, etc. 2. There's a dataflow/spreadsheet-like valuation engine on top of the data store 3. It's had long-term and senior level support among management, and most/all of GS's positions and businesses are available within SecDB. 4. There's a large pool of internal talent that's well acquainted with SecDB and how to use it.

So... it gives GS an easy way to see where they are, and then run models to figure out where they might be under different hypothetical scenarios.

What's noteworthy about this to me is that while they may be 'giving away' points 1 and 2 from my list, points 3 and 4 are the bigger competitive differentiators for Goldman. Even if another bank immediately adopts SecDB, while they may get the technology, it'll take them quite a while to integrate it as fully into their culture and business. SecDB implemented for a small bit of a big bank and run by a bunch of relative newcomers is a very different thing than SecDB as it might be implemented at Goldman.