The grocer-retail business is synonymous with high-transaction volume. To handle everything coming their way, Ahold USA runs a significant mainframe environment, which they continue to expand. CIO John Dettenwanger says, “We process millions of transactions per day. We have 750 stores. Think of all the items for sale in all those stores.

“The mainframe is still the highest availability and reliability machine in the market. If you really need sheer horsepower, it’s still the right choice. It’s a very mature technology and it allows you to engineer performance at a detailed level.…

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