What does Matthew 8:9 mean?

He explained, 'I know how authority works. I have soldiers under me. If I tell one to go, he goes; if I tell another to come, he comes; if I say to my servant, "Do this," he does it.' Matthew 8:9 - Modern Text Bible

(The centurion understands authority and believes Jesus has real power—he trusts that Jesus' command is enough, even from a distance.)