[archy_]

Pre-canned infrastructure is generally fine, this requires you use their programming language and their text editor. The article and website make no mention of if your code is stored in version control you can mirror, or if there are any plans to open source it (it appears to be a complete black box, which is fitting for a product called Dark). You also rely on their infrastructure, so it truly is putting all your eggs in the basket of a single startup.