In software, systems integration requires the stakeholders to be close, just as in football, where owner, manager and players need to be close.
And like football, the stakeholders need to communicate their plays.
And the language needs to be common.
https://blog.ulysses-systems.com/what-is-the-problem-today-with-integration/
https://blog.ulysses-systems.com/what-is-the-problem-today-with-integration-2/