Tigera

Welcome to the April 2026 edition of the Calico newsletter! Here’s what we have in store for you this month…

This Month’s Top Stories

See you at Red Hat Summit 2026

May 11-13 | Atlanta, Georgia: We’re getting ready for Red Hat Summit 2026! Come chat with us at booth #341 to dive deep into the latest Kubernetes networking, security and observability patterns with our engineering team and grab the latest Calico swag.

View more upcoming tradeshows

From Reference Architecture to Production: A Kubernetes Workshop

May 7 | 10 a.m.–11 a.m. PDT: Join us for a workshop that walks you through a production reference architecture for Kubernetes networking, security, and observability using real scenarios. Find out where your environment stands today and what to prioritize next.

Register Now

Accountable AI Agents: A Strategic Guide

Your AI agents are making decisions, calling tools, and talking to each other autonomously. But when something goes wrong, can you prove who authorized it? Our paper lays out a strategic framework for securing and governing autonomous agents at scale.

Read the whitepaper

eBook: Building Resilient Multi-Cluster Kubernetes

This reference architecture gives platform engineers, security teams, and Kubernetes architects a practical framework for closing the gap between Kubernetes adoption and operational readiness.

Download Now

Calculating The Integration Tax: What Your DIY Kubernetes Networking Stack Actually Costs

May 14 | 10 a.m.–11 a.m. PDT: In this session, we’ll break down the five quantifiable components — glue work, extended MTTR, licensing overlap, onboarding drag, and upgrade cost — and show how to size each for your environment.

Register Now

Open Source

Calico v3.31.5 Released

We’ve officially rolled out Calico v3.31.5. This update introduces a json output to plug the utility directly into your LLM and investigate issues.

Topology Mode Support: Calico has updated its annotations to support the new kubernetes.io/topology-mode.
Traffic Distribution: We now support the latest Kubernetes service specifications, allowing users to prefer endpoints within the same zone or even the same node for maximum efficiency.

On the Horizon: API Server Removal & v3.32

Calico v3.32 is expected to drop as early as next week.

Key Feature: Tech Preview of API server removal.
KubeVirt Support: Official support for KubeVirt VM migration is coming, extending Layer 2 capabilities to help migrate virtual machines into Kubernetes. Learn more.

On the Horizon: The "Hypercube" Consolidation (v3.33)

Major architectural cleanup for v3.33.

Image Reduction: By consolidating Go-based components that share dependencies, we are reducing our footprint from 13 images down to just 3.
Simplified UX: This change will drastically simplify the experience for users operating in private registries or restricted environments.

Final Call for Project Calico 3.30+ Hackathon Submissions!

The clock is ticking on the Project Calico 3.30+ Hackathon. You have until April 30 at 11:59 PM PT to get your final project and demo video submitted. Show us what you can build!

View the GitHub Guide & Register Today

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Recent Releases: Calico Enterprise & Calico Cloud

Feb. 5, 2026 - Calico Cloud 22.3.0

This update introduces Mylo, an AI assistant for natural-language network troubleshooting and policy advice, alongside new cluster connection alerts to help administrators track cluster health and availability.

Jan. 26, 2026 - Calico Enterprise 3.22.2

This hotfix resolves a race condition in EndpointSlice logic to prevent lost BGP service advertisements, though it does not include new security updates.

Upgrade today to benefit from the latest improvements and keep your environment running smoothly.

IN THE NEWS

Check out this recent Tigera-related coverage.

➔ To see all coverage and to read Tigera’s press releases, visit our Newsroom.

Blog

➔ Explore all blog posts

Guides

Top 4 Drivers of Kubernetes Costs and 5 Ways to Reduce Them – Over-provisioning, poor visibility, and runaway autoscaling can quietly inflate your Kubernetes spend. Read our guide for a clear look at what's driving costs and how to optimize them. Read the guide.

Platform Engineering vs DevOps: Top 5 Differences and Why Combine Them – Read our guide to see how the two disciplines differ, and how integrating them creates a path for faster, more consistent software delivery. Read the guide.

White papers

Securing AI Workloads in Kubernetes – Learn the security patterns required to protect AI training and inference workloads in Kubernetes. Download the data sheet.

Business Value of a Single Unified Platform – Explore how a unified approach to networking and security reduces risk and simplifies operations. Read the whitepaper.

Egress Security Checklist – A guide to securing outbound traffic and preventing data exfiltration in enterprise environments. Get the Checklist.

➔ Explore all white papers

Help Center

Our Help Center is an important technical resource for users and customers of Calico Cloud and Calico Enterprise. The Help Center contains technical articles to help you install, configure and manage your Calico solution. Access the Help Center here.

Certifications

Certified Calico Operator: Azure Expert

Gain experience using the Calico–Azure integration through hands-on labs. By the end of this course, you will know more about Azure cloud, as well as managed, self-managed, and hybrid cluster deployment using Calico in Azure. Enroll here.

Certified Calico Operator: Level 1 – Understand how Kubernetes networking works, how to configure and manage a Calico network, and how to secure your cluster following today’s best practices. Enroll here.

Certified Calico Operator: AWS Expert – Understand several options for deploying Kubernetes in AWS, examine how the default AWS networking works, and learn how to configure and manage Calico in AWS, and how to secure your AWS Kubernetes cluster. Enroll here.

Certified Calico Operator: eBPF course – By the end of this course, you’ll be able to run and modify simple eBPF programs, understand the deployment options and methods available with Calico’s eBPF data plane, and confidently deploy eBPF across multiple environment types. Enroll here.

➔ Explore all certification courses

We hope you found valuable resources and information in this month’s newsletter, and we welcome your feedback. Please let us know how we can make our monthly newsletter a useful source of information that you look forward to each month. Send us your feedback and suggestions.

– The Tigera Team

Tigera

Calico Newsletter – April 2026