The IT systems that governments and businesses depend on are often decades old and prone to failure. Why do they cost trillions to maintain but are so hard to modernize?
Water treatment plants, telephone exchanges, power grids, and air traffic control are just a few of the systems controlled by antiquated code.
Does everybody agree on what legacy IT is? What counts as legacy? It seems that there is not even a standard definition. About the closest that we come to is that it’s a system that does not meet the business need for some reason.
Many organizations find it difficult to modernize their legacy systems in a way that enables them to create an IT strategy that supports the quick adoption of newer technologies such as cloud, big data, IoT, and mobile.
The COVID-19 pandemic has exposed the debilitating consequences of relying on antiquated IT systems for essential services. Unfortunately, that dependence, along with legacy IT’s enormous and increasing costs, will still be with us long after the pandemic has ended.
The problems associated with legacy systems will only worsen as the Internet of Things. Now imagine a not-too-distant future where hundreds of millions or even billions of legacy IoT devices are deeply embedded into government and commercial offices, schools, hospitals, factories, homes, and even people.
Here are some articles on the issues around those legacy systems:
Inside the Hidden World of Legacy IT Systems
How and why we spend trillions to keep old software going
The Problem of Old Code and Older Coders
Legacy IT systems are everywhere—and they need help
Why Software Fails
No Internet of Things without strong cyber security