Security, Tutorials

Container Image Security Scanning with Trivy — Automating Vulnerability Detection in CI/CD Pipelines

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Introduction Container images are the building blocks of modern cloud-native applications, but they often ship with known vulnerabilities in base images, system packages, or application dependencies. A single unpatched CVE can expose your entire infrastructure to remote code execution, data breaches, or denial-of-service attacks. In this tutorial, you’ll learn how to: Install and configure Trivy […]

Cloud Architecture, Tutorials

Building Multi-Region AWS Architectures with Route53 and CloudFront for High Availability

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Introduction In today’s global digital economy, application downtime translates directly into lost revenue, damaged brand reputation, and frustrated users. A single-region deployment — no matter how well-architected — represents a single point of failure. Natural disasters, network outages, or cloud provider regional failures can take your entire application offline. In this tutorial, you’ll learn how

DevOps

Distributed Tracing with OpenTelemetry

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Introduction Distributed Tracing Architecture with OpenTelemetry Application Layer Order Service Python / Flask Payment Service Node.js / Express HTTP ◆ OpenTelemetry SDKs (Auto-Instrumentation) OTLP gRPC (port 4317) OpenTelemetry Collector Processors: Batch, Memory Limiter, Probabilistic Sampler Jaeger Storage + UI (port 16686) Grafana Tempo Object storage (S3/GCS) Kubernetes Deployment Collector DaemonSet One per Node Collector Gateway

Serverless

Event-Driven Architectures with AWS EventBridge

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Introduction Event-Driven Order Processing with AWS EventBridge Order API API Gateway + Lambda Publishes OrderPlaced EventBridge Custom Bus orders.bus Schema Registry Archive & Replay Event Rules & Content-Based Filtering Pattern: source=com.nova-tech.orders, detail-type=OrderPlaced, detail.total >= 100 Inventory Service Lambda: Reserves stock DynamoDB update_item Notification Service Lambda: Sends email Orders > $100 only (filtered) Dead-Letter Queue SQS:

Security

Zero Trust Networking with Cilium

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Introduction Cilium Zero Trust Architecture Kubernetes Cluster Worker Node 1 Frontend API DB Cilium Agent (eBPF) – Policy Enforcement Worker Node 2 Auth Service Catalog Cache Cilium Agent (eBPF) – Policy Enforcement WireGuard Encrypted Hubble (Observability) Service Map / Flows / DNS Cilium Network Policy Identity-Based / L7 / FQDN K8s API Server CRD: CiliumNetworkPolicy

Cloud Architecture

Cloud Cost Optimization Strategies on AWS

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Introduction AWS Cloud Cost Optimization Framework Phased approach: Visibility → Quick Wins → Architecture → Continuous Phase 1: Visibility Cost Explorer & Budgets Anomaly Detection Tagging strategy Phase 2: Quick Wins Compute Optimizer Right-size instances Saving potential: 40-60% Phase 3: Architecture Graviton migration Aurora Serverless Saving potential: 20-40% Phase 4 Ongoing Compute Optimization EC2 Right-Sizing

Tutorials

Building REST APIs with AWS Lambda and API Gateway

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Introduction Serverless computing has transformed how developers build and deploy applications in the cloud. By abstracting away server management, auto-scaling, and capacity planning, serverless architectures allow teams to focus purely on writing business logic. Among the most popular serverless services, AWS Lambda combined with Amazon API Gateway provides a powerful, scalable, and cost-effective foundation for

DevOps, Tutorials

Monitoring with Prometheus and Grafana

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Introduction In today’s cloud-native landscape, observability is not a luxury — it’s a necessity. Microservices architectures, ephemeral containers, and dynamic orchestration platforms like Kubernetes have rendered traditional monitoring approaches obsolete. When your application spans dozens of services that scale up and down in seconds, you need a monitoring stack designed for that complexity. Enter Prometheus

AI & ML

Deploying ML Models with FastAPI and Docker

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Introduction Deploying machine learning models into production is one of the most critical — and often most challenging — steps in the ML lifecycle. While building a high-accuracy model in a Jupyter notebook is rewarding, making that model accessible to applications, users, and other services through a reliable API requires a solid engineering foundation. In

Tutorials

Docker Multi-Stage Builds for Production

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Introduction Continuous Integration and Continuous Deployment (CI/CD) is the backbone of modern software delivery. In this tutorial, you will learn how to build a fully automated, production-ready CI/CD pipeline using GitHub Actions for CI/CD orchestration, Docker for containerization, and AWS Elastic Container Service (ECS) for deployment. By the end, you will have a pipeline that

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