The Portable Baby Monitor ecosystem spans three functional layers—upstream component supply, midstream device assembly and integration, and downstream distribution to households. Upstream, raw material and semiconductor suppliers provide chips, batteries, and plastics that enable wireless audio‑visual functionality. Midstream, manufacturers combine these inputs with firmware from technology providers and integrate connectivity platforms to produce finished monitors. Downstream, distributors, retailers, and e‑commerce platforms deliver the devices to end users, where value is realized through safety monitoring and data services. Value capture occurs at each tier through component margins, product pricing, and ancillary services.