It’s clear that the value promise of Carbon is to make it attractive to port existing C++ applications to it.
But how this is accomplished, article does not go into detail in this. Is there going to be ABI compatibility with C++? What are the features that make Carbon a better porting target than Rust?
The official webisite (https://github.com/carbon-language/carbon-lang) goes into better detail, but the gist is that you can basically #include C++ libraries and use their APIs as-is, without needing to resort to unsafe blocks or having to write more idiomatic wrappers.