One of our PMs on her project has a scrum team from Vendor A. She needed another developer. So she added one from another vendor. I like this idea because it keeps Vendor A honest.
I'd like to do the same but the project is currently at design stage so I can't use the resourcing excuse.
How can I:
- introduce the idea to the vendor (overcome resistance)?
- structure the commercials (e.g. SOW for main vendor and T&M for the single contractor)?
I suppose another option is to introduce 2 competing scrum teams but we don't have much budget and I think handling the code merges could be difficult.