Broadband is the name given to any fast, permanent Internet connection. It can be delivered by cable, satellite, mobile, fiber optics and ADSL, which is the technology for high speed Internet access. There are many of the Internet service provider in India like BSNL, Airtel, Sify etc.. But BSNL is the leading among them. To see all the Internet Service Providers of India see HERE.
When the Internet revolution began, users accessed the net via dial up and a "modem". Modem is a piece of hardware that converts analog signals to digital signal from your computer, so they can travel down a telephone line, and vice versa. This could be painful slow, and it tied up your phone lines. A broadband connection make Internet more enjoyable as it is much faster. This is because a broadband connection can download more chunks of data " bits" simultaneously.