Do I need to use a broker

We have a implementation that requires building interfaces mostly flat files transfer between different systems via FTP. Most of these interfaces are P2P. The integration server does the tranformation and the services are executed through DSP Pages
I am wondering if we need to use a broker, If I do not use the broker what am I missing?

Thanks in advance.

It’s not necessary to use Broker since you are not using pub/subscribe method to send/receive messages.