Development of Copy Trading Platform

I am looking to develop a software platform that copy trades into individual brokerage accounts into follower accounts.

The idea is that a user can link their existing brokerage account to a strategy or trader and anytime that strategy or trader executes a trade, it is copied into their brokerage account automatically.

There would need to be information sent from trading platforms to the custom software that is then transmitted to the brokerages to execute the trades.