I don't manage any of these people and somehow I've got product, design, and three engineering teams all rowing toward the same technical plan. They follow because they trust where I'm pointing. It works, but I'm now the glue on every big project, and if I let go for a week the whole thing drifts apart.
More people experience this than they realize.
You align teams without any authority, and now you're the glue holding every project together.
If this sounds familiar, the Library can help you find the bigger picture.