Hello -

I would agree that the real question is: what is your level of trust with your outsourcing partner? If you have a good relationship with them I don't see any issue in giving them the credentials.

As a best practice, it's always a good idea to maintain as much control over your assets and resources as possible when dealing with a far away vendor (or any vendor, really). Owning the source control repository, etc. is a great practice.

But, there is a diminishing return on trying to protect yourself from your own vendor. In the end, you'll have more success in outsourcing by investing in a solid partner who you can build trust with so that you don't have to worry about this kind of thing.

If you are dealing with a low-price vendor who's trustworthiness is unknown, you might consider relieving yourself of that stress by working with more reputable vendors. But, if this is just a new relationship and there are no red-flags I'd probably just send the credentials and save everyone some trouble.

TeamViewer is great for things like this, but it's certainly not a great way to build trust with teams so I'd only use it if you are worried about sharing your credentials more than you are concerned with building the relationship.

Probably it will be fine! Good luck - Dave