Saks is using its discount retailer, Saks Off 5th, to catch-up to Nordstrom — and taking a page from its rival to do so. Saks’ parent Hudson’s Bay Company bought Gilt Groupe for $250 million, and announced last week that it would integrate Gilt’s infrastructure and data set with Saks Off 5th. Gilt has 9 million users and reportedly completes 50 percent of its transactions via mobile, and the hope is that the integration will improve Saks’ mobile and personalization approach. The steps that Saks is following resemble those Nordstrom Rack has already taken. Here’s what the two have in common. Read more at Digiday.