From today, Morrisons customers will be able to buy their groceries on Amazon.co.uk.
Customers will be able to receive their items with same-day, free delivery as part of their Prime membership.
The service launches today in Leeds, but will be rolled out to the rest of the UK over the next few weeks.
Fresh produce will be available for order, as well as pantry goods.
Doug Gurr, country manager for Amazon UK, said: “Our relationship with Morrisons means that millions of Prime members can soon order their weekly groceries from their local Morrisons shop, with same-day delivery, at no extra cost.”
Morrisons chief executive David Potts said: “[The service] will give more and more customers the option of receiving Morrisons groceries straight to their doorstep, including freshly prepared products from our brilliant Market Street colleagues.”