Clash follows reports of Walmart asking IT suppliers not to use Amazon's cloud computing service.Read more
The boss of the Chinese e-commerce giant is pitching to American entrepreneurs. Should Amazon worry?
The $13.7bn (£10.7bn) deal marks Amazon's biggest push yet into traditional retailing.
Apple has just released its version of a voice activated loudspeaker which can play music respond to questions and control lights and central heating. It's powered by its virtual assistant Siri - and aims to rival Google's home device and Amazon's Echo. The BBC's Mike Powell went to an electronics store in central London where sales assistant Miftaul explained the difference between the products