It’s hard to believe they’ve been around for 25 years – and that in that time, they’ve changed little.
Why do we still use them, then? We’d never use a 25-year old computer or mobile phone, but we hardly ever stop to wonder about these ancient gadgets. It’s because they’ve served their purpose, and served it well. In their time, they’ve proven to be a reliable solution, with good security, scalability and availability; these are all important factors to any IT department. So what’s the downside?