1. The document discusses binary portability in virtualized environments using WebAssembly as an example.
2. It shows the steps to run an nginx WebAssembly binary using the wasmer runtime on Linux, including cloning the wasmer repository and running an nginx.wasm file.
3. A strace command is used to view the system calls made by the wasmer process running the nginx WebAssembly binary. This demonstrates it functioning like a normal Linux program and interacting with the operating system for I/O.