Pinterest lends itself naturally to selling the products that its users share millions of times a day. Now it's making it easier than ever for brands to sell, and consumers to buy within the social platform.

The private company is adding three new e-commerce platforms, IBM Commerce, Magento and Bigcommerce. It's also adding some big new brands: Wayfair and Bloomingdale's, Demandware merchants DVF and Steven Alan, plus thousands of Shopify stores.