Product Builder

Ship and debug over real networks.

For builders shipping real products. Everything in Prompt Engineer, plus how bytes actually move — addresses, routing, TCP, TLS, firewalls, and load balancers.

Lessons in this path

• The Round Trip — Watch one API call cross the internet and return.
• Clients & Servers — A server is a computer running a listening process.
• Names to Addresses — Turn a name into an address you can reach.
• Ports: Many Doors, One Machine — One machine, many ports — each a different process.
• Anatomy of HTTP — See the moving parts inside one HTTP exchange.
• APIs, JSON & Tokens — Call a real API: token in, JSON out.
• Addresses & Networks — Two addresses, one laptop: private inside, public at the edge.
• Packets & Routing — Follow a packet hop by hop across the internet.
• TCP: The Reliable Pipe — Watch TCP build a reliable pipe from unreliable packets.
• TLS & Certificates — Prove who you're talking to, then encrypt everything.
• Firewalls & Security Groups — Every packet is interrogated at the door.
• Load Balancers — One address, many machines — the balancer decides.