Content Independent of the product

Cloud architecture

Patterns and providers: the tradeoffs that decide how to structure a cloud workload and where to run it. No invented statistics, pricing, or market-share numbers.

API gateway and service mesh architectureNorth-south versus east-west traffic, and the sidecar tradeoff a mesh costs Caching architecture: from CDN to application layerInvalidation, stampedes, and picking the right pattern at each layer Choosing a cloud provider: a decision frameworkA decision framework: the real inputs and the switching-cost trap Cloud cost optimization: architecture patterns that save moneyArchitecture patterns that save money, decided at design time instead of on a billing dashboard Cloud networking fundamentals: VPCs, subnets, and peeringVPCs, subnets, peering, and the path a request takes to a private database Cloud providers compared: AWS, Azure, GCP, and beyondAWS, Azure, GCP, and the specialized, developer-first, and edge-first alternatives Cloud security architecture: shared responsibility and zero trustWhy identity is the real perimeter, and the failure patterns that happen in practice Container orchestration: Kubernetes architecture fundamentalsControl plane, pods as the atomic unit, and why stateful workloads are the hard part Database architecture in the cloud: replication, sharding, and consistencyReplication lag, sharding key choice, and what a managed database offloads Disaster recovery and multi-region architectureRTO and RPO first, then the pilot-light-to-active-active spectrum Event-driven architecture on the cloudNotification vs. state transfer vs. event sourcing, and the dual-write problem IAM architecture: roles, federation, and workload identityRBAC vs. ABAC, federation, and workload identity instead of long-lived keys Infrastructure as code: architecture and the drift problemState, drift, and blast radius: the parts that break in production Microservices vs. monolith: choosing cloud architectureWhat motivates a split, and the distributed-monolith anti-pattern Multi-cloud and hybrid cloud architectureWhat multi-cloud means in practice, and when the complexity tax is worth it Observability architecture: logs, metrics, and tracesWhy none of the three signals alone is enough, and how correlation works Secrets management architectureDynamic issuance, rotation, and why a static credential is a liability by design Serverless architecture patternsCold starts, the state problem, and when serverless is cheaper

More guides will be added. None of them use invented statistics or testimonials.