scene: "Fetch Page"
client server: "GET /"
server database: "Fetch Content"
database server: "Content"
server client: "HTML"

scene: "Update name"
client server: "POST /name?update=name"
server client: "200 OK"

scene: "Send ICMP"
client server: IP(ICMP("Ping"))

boundary "Internet": client
boundary "AWS": server database