digraph { 
graph [ dpi = 55 ];
rankdir="LR";
node[shape=record];
subgraph clusterStore {
  label="Call Center";
  Jack [label="Jack | \{hair: \"black\", eyes: \"blue\"\}"];
  Computer [label="Computer System"];
}
subgraph clusterAws {
  label="Amazon AWS";
  WebServer
  Database [label="Dynamo DB"];
}
Customer -> Jack [label="Phones"];
Jack -> Computer;
Computer -> WebServer [style="dashed", dir=both, label="HTTP"];
WebServer -> Database;
Database -> WebServer;

Computer -> Jack;
}