The difference between Live and Paper trading
Most broker allow you to have demo or papertrading account with them, in addition to your real account. Paper/demo account is an account with demo money, so you will not risk your real money.
You can have multiple connected accounts in AlgoCloud, so you can create connections to both your paper and live accounts of the same broker.
The point is that you can run your strategy against your PAPER account, trading with demo money.
AlgoCloud has clearly separated demo and real accounts:
Live accounts (real money) These are real money accounts of your broker. If you'll deploy your strategy on this conected account then it will trade with real stocks and real money through your broker.
Paper accounts (demo money) These are paper/demo accounts - you can get a demo account from your broker, or you can use our own AlgoCloud demo broker simulation. Your strategy will still use real datafeed and real prices, but it will trade with virtual (paper/demo) money.
Some broker connections don't support trading with real money yet
Live trading with real money is currently supported only on Alpaca.markets.
XTB and Interactive Brokers are supported only for demo trading, the connections are not yet stable enough to be used with real money.