Indices are a way to track the price movement of a set of shares on a certain market. Trading indices allows you to have exposure to a whole economy or industry in a single trade.
CFDs allow you to bet on the price of indices growing or decreasing without having to hold the underlying asset. Indices are a very liquid market to trade, and because they move for longer periods of time than most other markets, you may have greater exposure to prospective possibilities. With an Capitality account, you may start trading indices right now.