Let's suppose you buy a brand new Laptop with a lots of RAMs and super fast processor speed with of course a lots of money.
Now you ask the laptop dealer that till what duration this device is mine and the dealer said "Sir, it your till forever and infinity!".
Well it's not that bad deal as i got a lots of ram and speed for this amount with a lifetime of use you may think, but consider it this way that--
Are you really going to use all this RAM and processor power all the time till it's lifetime. Of course not even you are going to use this laptop(or we can say operating system) all the time. So, why pay for it's 24*7 use if you just need it let's say 6 hours a day.
This all idea may seem silly but that's what all I.T. companies use.
Consider the situation that you opened a new company and you buy all the in…