Mercer does the complex calculations that let companies know how much money they'll need to fund their pensions. When a legacy system needed upgrading, the company instead developed Retirement Studio, using the Microsoft .NET framework. But that system underutilized the processing power of newer multicore processors and couldn't distribute jobs across multiple servers. So Mercer rewrote the calculation engine as a private cloud, using Microsoft high-performance computing and Windows Compute Cluster Server. Retirement Studio now uses more than 1,000 cores across five data centers, processing more than 5 million records daily. It improved processing time by a factor of 100. Next up is setting up public cloud capacity in Microsoft Azure that Mercer can tap for added capacity during times of peak usage.