This article is based on a press release issued by 5G Americas on December 5, 2019, announcing the publication of a white paper on Cloud-Native 5G networks.
What Is Cloud-Native, and Why Does It Matter for 5G?
Cloud-native is a design philosophy centered on building and operating applications that fully exploit the advantages of cloud computing delivery models—whether those applications run in public clouds, private clouds, or on-premises infrastructure. Rather than simply migrating legacy software to cloud servers, cloud-native demands a fundamental rethinking of how applications are architected, deployed, and managed.
For the 5G wireless industry, adopting cloud-native principles is not a cosmetic upgrade. It represents a structural shift in how network functions are designed, how quickly new services can reach production, and how efficiently operators can scale capacity in response to demand.
5G Americas White Paper on Cloud-Native Networking
In December 2019, industry trade organization 5G Americas published a white paper examining cloud-native concepts as they apply to 5G networks. The paper introduces core cloud-native concepts, explains how they will reshape 5G network architecture, identifies adoption challenges, and proposes reference architectures and recommendations to guide network operators through the transition.
The white paper was co-led by Sam Samuel of Cisco and Milind Gunjan of Sprint, with support from 5G Americas member organizations including AT&T, Ericsson, Nokia, Qualcomm, Samsung, T-Mobile US, Telefónica, and others.
Key Cloud-Native Concepts Relevant to 5G
The white paper highlights several modern cloud computing techniques that are central to a cloud-native 5G architecture:
- Containerization: Packaging network functions as lightweight, portable containers (e.g., using Docker or similar runtimes) that can be deployed and scaled independently across diverse infrastructure.
- Microservices: Decomposing monolithic network functions into smaller, independently deployable services that communicate via well-defined APIs, enabling faster updates and easier fault isolation.
- Control-User Plane Separation (CUPS): Decoupling the control plane (policy and signaling) from the user plane (data forwarding) so each can be scaled and updated independently—a key architectural feature of the 5G core.
- Service Mesh: An infrastructure layer that handles service-to-service communication, providing traffic management, observability, and security without requiring changes to application code.
- Continuous Integration and Continuous Delivery (CI/CD): Automated pipelines that test, validate, and deploy code changes rapidly and reliably, reducing the time between development and production.
- DevOps: A cultural and operational model that breaks down silos between development and operations teams, enabling faster iteration, shared responsibility, and tighter feedback loops.
How Cloud-Native Changes 5G Network Development
Chris Pearson, President of 5G Americas, summarized the business impact:
“Developers are in the process of using fully automated continuous integration to test and push new codes and concepts to production. Cloud Native is going to enable enterprises and the telecom sector to bring newer ideas to production in a reduced time and improved innovation capability.”
Chris Pearson, President, 5G Americas
In practical terms, this means telecom operators can iterate on network features at a pace closer to software companies, rather than on the multi-year upgrade cycles historically associated with hardware-centric telecom infrastructure. New revenue-generating services—network slicing, edge computing, ultra-low-latency APIs for enterprise customers—become operationally feasible when the underlying network functions can be deployed and updated through automated pipelines.
The Open-Source Ecosystem Enabling Cloud-Native 5G
A significant portion of the white paper examines the open-source ecosystem that underpins the cloud-native approach. This ecosystem encompasses:
- Service architectures (such as those defined by 3GPP for the 5G Service-Based Architecture)
- Infrastructure-as-Code (IaC) tools for reproducible, version-controlled environment provisioning
- Automation frameworks for orchestration and lifecycle management of network functions
- CI/CD pipeline tooling for automated testing and deployment
- Monitoring and observability tools for real-time insight into network function health and performance
Projects under organizations such as the Linux Foundation (including ONAP, Kubernetes, and related initiatives) are frequently referenced in industry discussions of cloud-native telecom infrastructure, though specific project endorsements should be verified in the original white paper.
Challenges and Migration Strategies
Adopting cloud-native principles is not straightforward for incumbent network operators. Sam Samuel of Cisco, co-leader of the white paper project, was direct about the complexity involved:
“The road to cloud-native must be broken into phases, as operators will require deploying 5G core networks on a properly configured and controlled Cloud-Native stack. This is a significant task that may require the re-architecting and re-tooling of network functions for cloud-native operation.”
Sam Samuel, Cisco, co-leader of the 5G Americas Cloud-Native white paper
Key challenges the white paper identifies include:
- Legacy network function re-architecture: Many existing network functions were designed for dedicated hardware and require significant engineering effort to containerize and decompose into microservices.
- Operational tooling gaps: Operators must build or acquire CI/CD pipelines, container orchestration expertise (commonly Kubernetes), and observability stacks—capabilities that are new to traditional telecom operations teams.
- Ecosystem maturity: Standards, APIs, and tooling continue to evolve; operators must balance adopting early with the risk of building on specifications that are not yet stable.
- Security posture: Distributed, containerized environments introduce new attack surfaces and require updated security models compared to traditional network architectures.
- Phased migration: Operators must support hybrid environments in which cloud-native and legacy network functions coexist during transition periods.
Milind Gunjan of Sprint, the other co-leader of the project, acknowledged both the opportunity and the patience required:
“Cloud-native technologies will empower organizations to deploy and scale network functions more quickly and generate new services and revenue streams. We’re excited for the industry to focus on building a common, open, cloud-native platform and toolkit that can be easily and effectively adopted. But like all new technology concepts, time is needed for the network function architecture to evolve and the cloud-native ecosystem to mature.”
Milind Gunjan, Sprint, co-leader of the 5G Americas Cloud-Native white paper
Reference Architectures and Recommendations
The white paper draws on reference architectures produced by standards bodies to offer concrete guidance on the path toward cloud-native 5G deployment. It covers:
- The specific requirements of 5G (latency, throughput, network slicing, massive device connectivity) and how cloud-native architectures address each
- Migration strategies for operators moving from 4G/LTE core to a cloud-native 5G core
- Deployment best practices for containerized network functions
- Recommendations for phased adoption to manage risk while building organizational capability
About 5G Americas
5G Americas is an industry trade organization comprising leading telecommunications service providers and equipment manufacturers. Its mission is to advocate for the advancement of LTE and 5G wireless technologies across networks, services, applications, and connected devices throughout the Americas. The organization is headquartered in Bellevue, Washington.
Board of Governors members at the time of publication included: AT&T, Cable & Wireless, Ciena, Cisco, CommScope, Ericsson, Intel, Kathrein, Mavenir, Nokia, Qualcomm Incorporated, Samsung, Shaw Communications Inc., Sprint, T-Mobile US, Inc., Telefónica, and WOM.
Key Takeaways for DevOps and Telecom Engineers
- Cloud-native is not a bolt-on to 5G—it is a prerequisite for the flexibility and speed that 5G’s service promises require.
- Containerization and microservices decomposition of network functions are the foundational technical steps; CI/CD and DevOps practices follow to operationalize them.
- Migration must be phased. No operator will flip a switch from legacy to fully cloud-native overnight.
- The open-source ecosystem (orchestration, IaC, monitoring, pipeline tooling) is maturing rapidly, but gaps remain—operators should track standards body output and open-source project roadmaps closely.
- Security, observability, and organizational change management are as important as the technical architecture choices.