Can we avoid a repeat of Friday's CrowdStrike crash chaos?

Australians are being warned it could take up to two weeks to fully resolve the disruption to computer systems affected by the global tech outage. Microsoft says up to 8.5 million devices using its operating system were affected by the outage, triggered by a faulty software update from CrowdStrike. But what are the implications for a world that has become so reliant on its computers?