7 concentric layers of modern cloud-native infrastructure — from Linux foundation to CI/CD delivery.
The Cloud Native Technology Stack is visualized as 7 concentric layers, each representing a critical domain in modern cloud-native infrastructure. From the innermost (foundation) to the outermost (delivery), every layer has a distinct color, toolset, and purpose.
Color: Red
Distribution Examples: Ubuntu, Red Hat Enterprise Linux, Debian
Linux is the bedrock of cloud-native computing. Almost every container image and cloud VM runs on a Linux kernel. It provides process isolation, cgroups, namespaces, and the driver ecosystem that makes containers possible.
Use case: Host operating system for container runtimes, Kubernetes nodes, and bare-metal cloud instances.
Color: Green
Tools: NGINX, HAProxy, Traefik, CoreDNS
Networking tools handle ingress traffic, load balancing, service discovery, and DNS resolution within and across clusters. They are the gateway between external users and internal services.
Use case: Reverse proxy for microservices, TCP/HTTP load balancing, DNS-based service discovery in Kubernetes, API gateway routing.
Color: Blue
Providers: AWS, Google Cloud Platform, Microsoft Azure
Public cloud providers offer compute, storage, networking, messaging, and managed database services on demand. They eliminate the need to provision physical hardware and enable elastic scaling.
Use case: Provisioning virtual machines, object storage, managed Kubernetes (EKS/GKE/AKS), serverless functions, and managed databases.
Color: Pink
Tools: HashiCorp Vault, Let's Encrypt, Okta, Auth0
Security tools manage secrets, certificates, identity, and access control. They ensure that workloads, pipelines, and users authenticate and communicate securely.
Use case: Secrets management (API keys, database credentials), automated TLS certificate issuance, SSO/OAuth2 authentication, multi-factor authentication for cloud applications.
Color: Gold
Tools: Docker, Kubernetes, Istio, Consul, Nomad
This layer defines how applications are packaged (containers), scheduled (orchestrators), connected (service mesh), and discovered (registries). It is the heart of the cloud-native paradigm.
Use case: Container image building and registry, cluster orchestration and auto-scaling, service-to-service mTLS and observability via service mesh, multi-datacenter service registry.
Color: Purple
Tools: Terraform, Ansible, Pulumi, Chef, Puppet, AWS CloudFormation
IaC tools codify the provisioning, configuration, and management of infrastructure. Environments become repeatable, version-controlled, and auditable.
Use case: Declarative cloud resource provisioning (Terraform/Pulumi/CloudFormation), configuration management and server hardening (Ansible/Chef/Puppet), immutable infrastructure deployment.
Color: Light Green
Tools: Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana), Datadog, New Relic
Observability provides metrics, logs, traces, and alerting to understand system behavior in production. It is essential for debugging, capacity planning, and SLA monitoring.
Use case: Metrics collection and alerting (Prometheus + Grafana), log aggregation and search (ELK), distributed tracing, application performance monitoring (Datadog/New Relic).
Color: Dark Blue
Tools: Jenkins, GitLab CI, GitHub Actions, ArgoCD, Tekton
CI/CD pipelines automate building, testing, and deploying applications. GitOps tools like ArgoCD extend this by synchronizing cluster state with a Git repository.
Use case: Automated build and test on pull request (GitHub Actions/GitLab CI), declarative continuous delivery with rollback (ArgoCD), Kubernetes-native pipeline engine (Tekton), legacy enterprise automation (Jenkins).
This stack is not exhaustive but represents the most widely adopted toolset across the cloud-native ecosystem as of 2026.