If you were trying to log in to your bank account or check in for a flight today, you might have found yourself locked out and unable to access those services online.
That was because of a problem with Microsoft Azure, the company's cloud system.
A huge number of services depend on cloud computing, and organisations like Fire and Emergency, Health NZ, and Immigration NZ also reported issues.
Just last week, Amazon's cloud services went down, disrupting websites around the world.
So how vulnerable are we to outages like this as more and more of the internet depends on just a handful of companies?
Dev Singh from the University of Auckland's Electrical, Computer and Software Engineering school joins Emile Donovan to explain what's going on.
Photo: CHRISTOPH HARDT/GEISLER-FOTOPRES
