There's little question that multi-sourcing -- parceling out the IT services portfolio among a number of vendors -- is the new normal for IT outsourcing. But what happens when things go wrong and there's no proverbial single throat to choke? "Multi-vendor outsourcing arrangements are more complicated because services can very rarely be performed in isolation from other services," says Lois Coatney, partner with outsourcing consultancy Information Services Group (ISG). "Because of this risk, providers will use commercial language to 'carve out' where they will not be held accountable." "There are no market norms for these liability issues," says Shawn Helms, partner in the outsourcing and technology transactions practice of K&L Gates. "These are service providers that are fierce competitors and getting everyone to agree to the same exact terms is a herculean task that takes significant time and effort." Even in the best ci