if an organization is using Agile aproach for project management how is dealing with the Vendors that are not in Agile model and with external entities that are also not in agile approach?

I can't recall a situation when it mattered how my vendors operated- whether they were agile, command and control, or mafia. I needed a specific deliverable (service or product) by a specific date, and we agreed to pay them a specific amount of money to accomplish this. How they managed their end was of little importance to me, as long as they met their contractual obligations.

This is also true for other departments within my organization. My projects may rely on them, but it doesn't matter how they're managed, so long as we all meet our commitments. to each other.

thanks for your contribution . in that sense is more important to take the approach of hybrid and having clear the deliverables for each party and not having unique single agile aproach losing the deliverables commitment for each party and the global interactions, objetives and plan.

thanks for your contribution.