Designing an event-driven pipeline on Lambda and EventBridge that survives real production failure modes, poison messages, retries, and cold-start latency.
How Karpenter's just-in-time, bin-packing node provisioning replaces static node pools and Cluster Autoscaler tuning to cut compute spend further.
The three controls that separate a production-hardened EKS cluster from a default one: IRSA, default-deny NetworkPolicies, and OPA Gatekeeper.
Cutting a production PostgreSQL database over to a new major version using logical replication, without the downtime pg_upgrade in place normally requires.
Structuring a multi-environment GitOps setup with ArgoCD and Helm: app-of-apps, per-environment overlays, and sync policies that self-heal drift.
Getting secrets out of CI/CD env vars and .env files and into HashiCorp Vault, with short-lived credentials issued to the pipeline, not long-lived ones.
A hardened Nginx reverse proxy in front of your app, with Let's Encrypt certificates that actually auto-renew instead of silently expiring.
A working Prometheus + Grafana stack: scrape configs, a real alerting rule, and a provisioned dashboard, built so alerts fire on symptoms users feel.
The three objects behind almost every Kubernetes app: Deployment, Service, Ingress, and the rollout settings that decide if a bad release is a non-event.
How to structure Ansible inventories, roles, and playbooks so server configuration stays idempotent and reviewable, not another pile of one-off scripts.
Building a production-shaped AWS VPC in Terraform: public/private subnets, NAT, route tables, and the defaults that quietly cause outages.
The Linux fundamentals and reusable Bash scripts, log cleanup, health checks, scheduled jobs, that show up in almost every DevOps role.
A practical first CI/CD pipeline that builds, tests, and deploys on every push, with secrets handled correctly and a matrix build for good measure.
How to write a lean multi-stage Dockerfile and a docker-compose.yml that wire up your app and its database without shipping a 1.2GB image by accident.
A step-by-step guide to hosting a static site on S3 behind CloudFront with Origin Access Control, ACM TLS, and a proper cache-invalidating deploy step.
A practical framework for rightsizing requests/limits, tuning VPA/HPA, adopting spot node pools, and getting Cluster Autoscaler to actually save money.
How to architect multi-region PostgreSQL failover with streaming replication, prove your backups actually restore, and hit sub-5-minute RTO.
The exact caching, parallelization, and runner changes that took a monolith's GitHub Actions pipeline from a 45-minute build to under 5 minutes.
A practical path from one sprawling Terraform state file to versioned modules, safe migrations, and policy-as-code guardrails teams can share.
A field-tested framework for cutting cloud spend without cutting reliability: rightsizing, committed-use discounts, and what makes savings stick.
How we typically 3x deployment frequency by replacing manual approval chains with GitOps-driven CI/CD on Kubernetes, without loosening change control.
The recurring failure patterns across architecture reviews: single points of failure, IAM sprawl, and undocumented tribal-knowledge dependencies.