Charisse Jones

USA TODAY

Walmart’s decision to hone in on its online business crossed a critical threshold Monday when it finalized its $3 billion purchase of e-commerce site Jet.com.

Walmart’s president and CEO, Doug McMillon, took to Instagram to announce the closure of a deal that the retailer hopes will enable it to cultivate and cater to more consumers online.

“Together, both Jet.com and Walmart.com will be able to leverage each other’s assets to grow the ways we serve customers,’’ McMillon said in a post on Walmart’s blog Monday.

Walmart, the world’s largest retailer, has been making bold moves to bolster both its online business and super centers, as it fights to remain dominant amid a rapidly changing retail landscape. It’s filling store aisles with attractive displays of organic and gourmet items to attract shoppers seeking fresh food options. And with Walmart.com, an online grocery offering, and now Jet.com, which caters to a more affluent shopper, the retailer is widening its e-commerce footprint.

Walmart.com and Jet.com will continue to be separate brands, the retailers says.