You are the integration layer
Every tool in the stack was bought to remove work. Each one did, in isolation. What none of them removed is the work of making them agree with each other, and that work quietly landed on the founder or the single best operator in the company.
This is the most expensive labour you own and it is invisible on every P&L. Before automating anything, find the human who is currently acting as the API between two systems. That person is the specification.