On today's call, we will also be discussing certain non-GAAP financial information, which excludes stock-based compensation expense and other special items as well as other non-GAAP items, such as free cash flow and constant currency revenue comparisons. A reconciliation of our non-GAAP results to our reported GAAP results and other information concerning these measures is included in our earnings release and on the Investor page of Teradata's website, which can be found at teradata.com. A replay of this conference call will also be available later today on our website. Teradata assumes no obligation to update or revise the information included in this conference call whether as a result of new information or future results.I'll now turn the call over to Mike. Michael F. Koehler Thanks, Gregg, and good morning, everyone. Teradata had another strong quarter in Q2, with revenue growth of 14% as reported and 18% in constant currency. And for the first half, revenue was up 20% in constant currency while going against last year's record first half revenue growth of 17% in constant currency. Non-GAAP operating income grew 31% in the quarter to $188 million, and non-GAAP EPS of $0.77 was up 28% over prior year. Non-GAAP operating margin of 28.2% was 390 basis points higher than the previous best quarter of 24.3%, which was achieved in Q2 of 2011. The record operating margin was driven by solid execution across the company and a significantly favorable revenue mix. In the quarter, higher-margin product revenue grew faster than services revenue. And within the product revenue, higher-margin EDWs grew faster than the appliances. And within the services revenue, higher-margin maintenance grew faster than Consulting. It is rare when all 3 revenue mixes line up favorably like this in a quarter. Overall, we were pleased with our better-than-expected second quarter results and where we stand at the end of the first half.
Turning to the regions, the Americas reported revenue growth of 17% and was up 18% in constant currency. For the first half, the Americas was up 22% as reported and in constant currency. Q2 marked the 10th consecutive quarter of double-digit growth, with 7 of those quarters growing more than 20%.The Americas had a large number of new customer wins in the quarter, including Groupon, which will be implementing a data warehouse to manage large-scale web log data and differentiate offers by location and subscriber; Mutual of Omaha, which purchased a data warehouse to integrate data from across finance, marketing, insurance and retirement services to provide better information to their users; the State of Indiana Family and Social Services Administration will be using our Enterprise Data Warehouse to better manage care for their citizens; and Machinima, the #1 entertainment channel on YouTube, purchased both a data warehouse and Aster to analyze online viewer behavior and optimize placement of advertising. Aprimo new customer wins in the Americas included a leading university, which will use Aprimo to better track and optimize marketing spend and to improve its marketing workflow. Constellation Energy, which is a Teradata customer and purchased Aprimo for campaign management; and at Amsterdam Printing, a leading promotional products company, which purchased Aprimo to gain better insight into its customers and prospects. Expansions and upgrades included Sears Holding, which will -- upgraded and expanded their analytics environment to the hybrid storage 6690 EDW; and the Royal Bank of Canada, which also deployed our hybrid storage 6690. Other upgrades and expansions in the quarter included Boeing, TIAA-CREF, Winn-Dixie and PRODABEL in Brazil. Europe, Middle East and Africa had an exceptional second quarter, with revenue up 16% as reported and up 27% in constant currency. This was better than we expected given the macroeconomic environment and the strong prior year comparable when revenue grew 34% in Q2 of 2011. For the first half, EMEA revenue was up 13% as reported and up 20% in constant currency. Although we are experiencing some lengthening of sales cycles and delays in purchases, it is currently being offset by increased pipelines across most of the region and strong revenue growth in newer markets such as Russia, where we have been steadily adding territories the past 4 years. Read the rest of this transcript for free on seekingalpha.com