One question I get asked frequently is which integrations are the most costly from a billing perspective. Let's try this out with a very simple example.
I will use the following integration among others - this processes an 80kb file, i.e. should use up 2 * 50 kb messages per flow. The others are simple REST based integrations with payloads < 50kb.
I run a couple of flows and then go to the OCI Billing Metrics -