AT&T Business expanded the reach of its 400G wavelength connectivity into 16 additional US metropolitan areas, extending the service as enterprises face mounting pressure to support AI-era traffic at scale.

With the 400G wavelength edgeless handoff capability now live across 440,000 properties serving more than 2.3 million business tenants, the mobile operator is targeting rapid deployment within 15 days where eligible.

AT&T stated the 400G rollout is designed to connect AI workloads from any location to the cloud, with security embedded in the network rather than added on top.

The company’s edgeless design approach anchors 400G at key interconnection hubs where cloud, network and enterprise traffic converge. It is currently in more than 130 carrier hotel locations nationwide.

The architecture is intended to deliver consistent handoff and predictable performance without requiring traditional network edge builds at every location or data centre.

Amrit Singh, industry principal for information communications technology at Frost & Sullivan, stated AT&T’s wavelength services reflect the infrastructure rigour required for the AI era, citing the company’s fibre reach and a successful 1.6 Tb/s single-carrier wavelength trial.

For enterprises scaling AI across multiple sites, AT&T noted the ability to avoid stitching together multiple smaller circuits as workloads grow is a key benefit for the service.

Branch locations, campuses and edge environments requiring high-capacity connectivity to centralised compute and cloud services are among the primary use cases for the service.

The post AT&T extends 400G network to meet AI traffic surge appeared first on Mobile World Live.