AT&T to move its 5G network to Microsoft Azure's cloud platform

AT&T 5G equipment
(Image credit: AT&T)

AT&T has announced it will move its 5G mobile network to the Microsoft cloud. This strategic alliance with Microsoft will provide a path for all of AT&T’s mobile network traffic to be managed using Microsoft Azure technologies and allow the telco to deliver cost-efficient 5G services at scale. Simultaneously, acquiring AT&T’s Network Cloud 5G technology and talent will allow Microsoft to help operators increase competitive advantage through streamlined operations and service differentiation.

AT&T 5G core

The companies will start with AT&T 5G core, the software at the heart of the 5G network that connects mobile users and IoT devices with internet and other services. Bringing existing and future network workloads to Azure for Operators will enable AT&T to increase productivity and cost efficiency while focusing on the delivery of large-scale network services that meet its customers’ evolving needs.

The alliance isn’t just good news for AT&T – Microsoft will gain access to AT&T’s intellectual property and technical expertise to grow its telecom flagship offering, Azure for Operators. Microsoft is acquiring AT&T’s carrier-grade Network Cloud platform technology, which AT&T’s 5G core network runs on. AT&T’s Network Cloud platform has been running AT&T’s 5G core at scale since the company launched 5G in 2018. This move brings real-world production 5G workloads to Azure for Operators. AT&T’s Network Cloud platform engineering team will receive offers to join Microsoft.

“Microsoft’s decision to acquire these assets is a testament to AT&T’s leadership in network virtualisation”

Andre Fuetsch, AT&T

“AT&T has one of the world’s most powerful global backbone networks serving hundreds of millions of subscribers. Our Network Cloud team has proved that running a network in the cloud drives speed, security, cost improvements and innovation. Microsoft’s decision to acquire these assets is a testament to AT&T’s leadership in network virtualisation, culture of innovation, and realisation of a telco-grade cloud stack,” said Andre Fuetsch, executive vice president and chief technology officer, AT&T. “The next step is making this capability accessible to operators around the world and ensuring it has the resources behind it to continue to evolve and improve. And do it securely. Microsoft’s cloud expertise and global reach make them the perfect fit for this next phase,” Fuetsch continued.

New 5G services and customer experiences

By using Microsoft’s hybrid and hyperscale infrastructure, AT&T can substantially reduce engineering and development costs. Early access to Microsoft’s cloud, AI and edge technology will provide AT&T with the flexibility it needs to rapidly innovate and launch new services and customer experiences enabled by 5G.

“Support operators with a carrier-grade cloud”

Jason Zander, Microsoft

“With Azure, operators can provide a more flexible and scalable service model, save infrastructure cost, and use AI to automate operations and differentiate customer offerings,” said Jason Zander, executive vice president Azure, Microsoft. “Through our collaboration with AT&T, Microsoft will expand its telecom portfolio to support operators with a carrier-grade cloud that provides seamless experiences across Microsoft’s cloud and the operator’s network.”

Secure telecom network in the cloud

As AT&T design, development and engineering experts join its ranks, Microsoft can apply its knowledge to expand the technology skills it obtained from the 2020 acquisitions of Affirmed Networks and Metaswitch Networks, to enable operators to run a secure telecom network in the cloud. Microsoft will now also acquire AT&T engineering and lifecycle management software used to develop and deploy a carrier-grade cloud that runs containerised or virtualised network services. Microsoft will make the platform applicable to other carriers through Azure for Operators and invest in an ecosystem to enable simpler and faster transition of network workloads to cloud. 

Microsoft will assume responsibility for both software development and deployment of AT&T’s Network Cloud immediately and bring AT&T’s existing network cloud to Azure over the next three years.


Rachael Sharpe

Rachael is a British journalist with 17 years experience in the publishing industry. Since launching, she’s been freelancing, and working for some of the world’s best-loved websites and magazines including and and has also had a book, iPad for Photographers, published. A regular contributor at 5Gradar, Rachael is following the 5G market closely. Find out more at