Lot’s of discussions are going on in the internet on possibilities to scale agile. There are various frameworks, which are gaining more and more popularity. This post points to one of the discussions at Agile Uprising on the topic.
The discussion is worthwhile reading, as subject matters experts, including matured agile coaches, scrum musters and developers jump onto the topic and make it a great overview over pros and cons of each of the approaches. You will find also several further links to more resources giving more details.
Check it out at SAFe vs LeSS vs Nexus Vs Spotify method, etc