Staples is on Wednesday announcing an acquisition of San Mateo-based Runa, a specialist in e-commerce personalization technology — one of a series of recent moves the company has been making to compete better with Amazon and others in the online sale of office supplies. A spokesperson for Staples confirms that this is the retailer’s first acquisition of a Silicon Valley startup, and it looks like Staples will be using the acquisition to start doing more in the space of e-commerce, and Silicon Valley. “Runa has a unique platform and outstanding talent with experience in e-commerce and online marketplaces,” said Ronald Sargent, chief executive officer and chairman, Staples, in a statement. “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.”