1. Your trading system, for example Trayport or Endur, sends each trade as it is booked, over Kafka or a REST call, as the made-up trades here could be.
2. Market data comes in the same way, from the sources you already pay for.
3. Calseda keeps every position and P&L figure live, against its limits, as either of them changes.
4. Results go back to your systems, and alerts go to Teams or Slack.

To see this on your own trades, ask for a pilot.