The Amazon Web Services (AWS) outage on Monday made global headlines after knocking some of the world's largest sites offline for hours. For users, the impacts ranged from the serious - such as not being able to access vital banking, government or work services - to the not-so-serious, such as fears of losing long built-up streaks on Duolingo. But the outage has also reignited the debate around whether countries, including the UK, are over-dependent on a handful of US tech firms. Should we