I understand where you are coming from, for non-techy person or one whose day to day work doesn't involve tech can have hard time appreciating the nuances of the technical challenges because technology despite the obstacle be it geographics, political or laws of physics themselves has went to level of working so level that until it goes down and goes down really good nobody blinks an eye on it.
2. I don't know why low jitter is better. I do know low jitter is better. I do know gaming needs low jitter. I don't do gaming.
You are not required to know it just like a network engineer doesn't need to know how bicuspid valve of heart works until some close relative of him his suffering from some cardio problems.
We do appreciate your curiosity thought, keep up mate +1
Jitter will mess up VoIP for
business people and gamers need no introduction for it, it scares the best of them .
technical terms: when you have very highly varying latency --> this is called Jitter
Why Jitter is my enemy?
Jitter is just a measure of multiple-effects, not a cause!. It is an aftermaths of lots of things in background like queuing, traffic loads and competition between traffics at different speeds/priorities and together what this ultimately leads to out of order packets, think like this you ask someone to do something for you
but you somehow the instruction mannual has all the steps mangled, what do you thinks gonna happen?
The apps be it fps game or voip call which depends on fast transfer/process of packets when receive packets out of order it creates chaos for them.
(you miss headshot, call with your boss is full of hiccups , the messages are jumbled and sometimes pixelations which will make you laught at him at wrong time)
4. I am still curious why people need a leased line.
Two words: Mission critical
For your average customer internet going down, or getting 5mbps on 1 gbps or some high pings here or there for a while doesn't affect them in a commercial, yeah it might not be your money's wortht that you pay 5000 INR/month but internet goes off for 7 days but it won't make you wallet / business cash bleed.
Now think of a bank,not even a big one, say a branch of a small bank if their internet goes down even for 2 hour, think how muchruckus it creates both for the bank and customer(transactions failed,delayed or denied or even as customer your time is wasted coming to bank ) and for an 8 hour work day they lose 20% of it and at bank scale it means a lot
So banks need ILL, for them internet going down bleeds money
Scenario 2: Suppose you have created some slack like apps which allows video conference, now suppose suddenly ping to your server spikes, now all your clients who shell dollar to you will face massive inconvenience which costs them a lot(lots of meeting cancelled)
So your startup need ILL, no matter what goes wrong on clients connection, their connection
to you must not be jaggy as it will cost you customer and lose money in SLAs
Similar cases are for bandwidth/speeds.
ILL is a guarrantee of service and QoS for business/individuals where service downtime/ quality affects the business severely, Airtel may provide you good service
most of the time but
never will be the time Airtel's service will go down/QoS for an ILL customer and if it does happens then depending on the agreements they have to compensate if something
really bad happens.
3. No comments on the village part. I can understand wanting to live in San Gimigiano. Why somebody would want to live in an Indian village is beyond my understanding.
Same here
But in simple words: Evreything has pros and cons and each to his own.