# Networks
All Networks notes →What is Istio
CNCF-graduated (July 2023) service mesh — sidecar model plus the newer sidecar-less ambient mode (stable since 1.24), now extending into AI traffic via the Gateway API Inference Extension and 2026's Ambient Multicluster beta.
What is Envoy
CNCF-graduated L7 proxy built at Lyft — the de facto data plane for service mesh (Istio, Linkerd's predecessor lineage) — now extending into AI traffic via Envoy AI Gateway, which reached v1.0 with a native MCP Gateway in 2026.
# Observability
All Observability notes →What is Cortex (cortexproject)
CNCF Incubating, horizontally-scalable multi-tenant long-term storage for Prometheus — the project Grafana Mimir forked from in 2022, still maintained as the vendor-neutral, community-governed alternative once Grafana Labs redirected engineering effort to Mimir.
What is Fluent Bit
CNCF-graduated, C-written log/metrics/trace forwarder — Fluentd's lightweight sibling, the de facto node-level log-collection DaemonSet in most Kubernetes clusters, and Grafana Alloy's main incumbent competitor for that slot.
What is Jaeger
CNCF-graduated distributed tracing system built at Uber in 2015, Dapper-lineage like Zipkin before it — and, since Jaeger v2, rebuilt on top of the OpenTelemetry Collector rather than bespoke ingestion code.
What is Prometheus
CNCF's second graduated project (2018) — the pull-based metrics monitoring system and query language (PromQL) that defined the exposition format nearly every metrics tool now speaks, and the API that Grafana Mimir scales out horizontally.
# Agentic Ai Projects And Mastery
All Agentic Ai Projects And Mastery notes →# Ci Cd
All Ci Cd notes →What is ArgoCD
CNCF-graduated declarative GitOps continuous delivery tool for Kubernetes — pull-based reconciliation from Git via an Application CRD, the App-of-Apps pattern for fleet management, and Argo Rollouts for canary/blue-green progressive delivery.
What is FluxCD
CNCF-graduated GitOps toolkit for Kubernetes, built as a set of composable controllers (source, kustomize, helm, notification, image-automation) rather than one monolithic app — Flagger is its progressive-delivery counterpart to Argo Rollouts.
What is GitOps
A declarative delivery model where Git is the single source of truth for desired system state, and an in-cluster controller continuously reconciles live state to match it — the operating model behind ArgoCD and FluxCD.