Staples Inc. has bought Runa, a California-based company whose software helps e-retailers personalize offers for consumers. Staples, No. 2 in the Internet Retailer Top 500 Guide, did not say how much is paid for Runa.

Runa’s products include PerfectOffer, which enables retailers to set up “automated, data-driven and personalized offers in real-time,” along with PerfectShipping, which “provides real-time personalized delivery estimates and free-shipping offers,” Staples says.

Runa’s headquarters in San Mateo, in Silicon Valley, will serve as the chain’s newest “Staples Lab,” similar to other e-commerce technology centers Staples operates in the Boston area and in Seattle. Staples says it will hire workers for the San Mateo office.

“Runa has a unique platform and outstanding talent with experience in e-commerce and online marketplaces,” says Ronald Sargent, Staples’ CEO and chairman. “With Runa, we’re adding technology to better serve our customers with personalized items, offers, and delivery estimates, all in real-time. Runa will allow us to tap into the wealth of engineering and e-commerce expertise in the Silicon Valley area.”