Whenever someone in a planning or transport field tells you they work on "integration" or "integrated x", ask them: "Integration of what with what, exactly?"
Integrated and integration carry a root meaning of things that are normally separate being combined or dealt with together. Thus we speak of integrating transport and land use, integrating two adjacent transit networks, or integrating functions within an organization (as in the term vertical integration).
Because we've all been taught to fear silos, which are areas of activity dealt with in isolation, we are supposed to love the word integrated, which implies somehow that this problem has been overcome.
But communities have to choose between different integrations.
For example, recently, I was dealing with a city that controls its own transit system, and that was wondering if its service should be integrated with its suburban transit agencies. This would have required giving up city control of the agency to a regional authority.
But this idea would also disintegrate. Specifically, it would prevent the integration of the city's transit thinking with the city's thinking about traffic, parking, and land use. Whereas a city government can plan all these interdependent things together, they often find it easier to deliver great transit outcomes than a city that must rely on a regional transit agency can. It is too easy, in a city's politics, for a regional transit agency to be seen as Other, not part of the city in a bureaucratic sense and thus prone to neglect or exclusion when the city sets its own priorities. After all, we all prefer to think about things we control rather than things we don't.
I'm not expressing an abstract view about whether city control or regional agencies is the right way to organize transit. The answer is different in different places.
But I am warning about the word integrated, when used without clear reference to which specific silo walls are being broken down. If you're not clear about that, and you don't demand clarity from others who use the word, integration may not give you the specific integration that matters most to you.
Even integration can be a silo.