Kroger says it has partnered with Instacart to deliver food and staples in as little as 30 minutes, after unsuccessfully testing quick deliveries two years ago (Jaewon Kang/Wall Street Journal)

Jaewon Kang / Wall Street Journal:
Kroger says it has partnered with Instacart to deliver food and staples in as little as 30 minutes, after unsuccessfully testing quick deliveries two years ago  —  Partnership draws supermarket giant further into a crowded market  —  Kroger Co. said it is partnering with Instacart Inc …