BTC or Bitcoin is the new technology developed for exchanging money and security purpose. No intermediate transactions are there and the transaction fee is very less. Simple and easy to use online application allows for multiple purposes.
Aside from that bitcoin can be a sustainable type of monetary source which can be gathered online. Despite of low fee of transactions, it has a very fast and safe digital money sending transactions as well as comfortable payment spediting. The simplicity made over people to demand this kind of currency and invest for the future profitable gains of their assets. It's disadvantages compare drom fiat money is, it has an unpredictable economy movement of it's price value; very volatile.