Large, critical systems are hard to upgrade. Especially when it requires OS level changes. 'It works now, dont touch it'. Health care, defense, physical infrastructure controls, industrial control systems. These systems are critical to the safety and daily survival of millions. Upgrading the OS just to be 'up to date with the new hotness' is to much of a risk factor.
Typically these large systems only get upgraded when the hardware is replaces. If you are an American your health insurance company still interacts with AS/400 from the 1970's on a daily basis. Those machines will (nearly) never update from the version/s of software running.
Large systems update slowly, 'cause an outage could be catastrophic to the organization and public safety. The (entertainment) web can do what it wants as fast as it wants 'cause peoples lives are not at risk in daily operation.
Remember, the "internet" is every connected device. The "web" is what can be rendered in your browser.
Large, critical systems are hard to upgrade. Especially when it requires OS level changes. 'It works now, dont touch it'. Health care, defense, physical infrastructure controls, industrial control systems. These systems are critical to the safety and daily survival of millions. Upgrading the OS just to be 'up to date with the new hotness' is to much of a risk factor.
Typically these large systems only get upgraded when the hardware is replaces. If you are an American your health insurance company still interacts with AS/400 from the 1970's on a daily basis. Those machines will (nearly) never update from the version/s of software running.
Large systems update slowly, 'cause an outage could be catastrophic to the organization and public safety. The (entertainment) web can do what it wants as fast as it wants 'cause peoples lives are not at risk in daily operation.
Remember, the "internet" is every connected device. The "web" is what can be rendered in your browser.
Yeah 21 years of HTTP/1.1 do create some legacy :D
...and HTTP 0.9 was released in ... wait for it ... 1991! Nearly in step w/ HTML. Legacy is an understatement :).