It's no surprise that most Agile transformations start at the team level. Agile is a grassroots movement led by a bunch of software developers who knew, through their trials and tribulations, that there had to be a better way to build software.
In choosing the right framework for your team it will depend a lot on where you are on your journey.
If you're a product/project team, Scrum is the place to start. Especially if you're new to Agile, or if you have a mix of Agile understanding in your team members.
Scrum is simple to pick up because the framework gives you everything you need to get started. Plus, once you begin to master some of the basics of Scrum, it's easy to add practices which enhance your agility. ...
