What is the correct phrasing:
Can you explain why?
Here’s the context:
In partnering with us, businesses can transition to/into a digital publication etc.
I feel "transition into" implies more significance to the occurrence. "Transition to" might be be a lesser or perhaps more common change.
Like the difference between the act of adapting to a given circumstance and the act of changing one's nature.
"Transitioning to" implies that the subject is going from one place to another (perhaps instantly) while "Transitioning into" implies that the subject is going through a process to become, or to do, something else.
I believe "into" is what you would use to describe how a business can become something better with the process of combining with your institution.
Since I'm old hat, I suggest that 'transition' is not yet a verb and so, neither example is grammatically correct.