Fast, an online login and checkout experience, has launched a major expansion by making its one-click Fast Checkout product available to 4 million e-commerce stores on the WooCommerce platform. When the product was originally released it was available only to sellers on the BigCommerce platform, according to a press release.

The company's expansion of more than 2.600% will now reach 29% of the world's e-commerce sellers during the holiday shopping season.

Merchandise purchased through Fast Checkout since its launch has more than tripled each month, increasing the company's employees from two to more than 80 in the last 12 months.

"Since we launched Fast Checkout in September, thousands of sellers on WooCommerce have been contacting us, clamoring for the day when they could install our one-click checkout buttons on their stores. That day has arrived," Domm Holland, Fast CEO and co-founder, said in the release. "Only with Fast can WooCommerce sellers add one-click purchasing directly from the product pages of their stores, allowing shoppers to skip the checkout process entirely and drive even more sales."