Networking fundamentals
Routing, switching, DNS, load balancing, and how packets actually move between services.
Networking sectionNetworkCrafts explains cloud connectivity, routing, segmentation, and security controls in plain language — for engineers, architects, and anyone who needs the map, not the marketing deck.
Each pillar links to a section of the playbook. Read one at a time or follow the full path.
Routing, switching, DNS, load balancing, and how packets actually move between services.
Networking sectionVPCs, regions, autoscaling, managed services, and what changes when you leave the data center.
Cloud sectionSegmentation, zero trust, encryption in transit, IAM boundaries, and incident-ready logging.
Security sectionVPNs, private links, hybrid patterns, and how branch offices reach cloud workloads reliably.
Connectivity sectionA vertical timeline you can follow when designing or reviewing infrastructure.
Identify who talks to whom: users, APIs, databases, third parties. Draw the flows before picking tools.
Split environments, segment subnets, and decide where inspection and authentication happen.
TLS everywhere it matters, least-privilege IAM, logging on choke points, and tested failover.
Latency, errors, and security signals should tell you when the design — not just a server — needs a change.
When operations, security, and product share the same picture of how traffic moves, fewer surprises show up at launch.
No. We assume you work near infrastructure — product, support, security, or leadership — and want clear explanations without a certification course.
We describe patterns that appear across clouds and on-prem stacks. When we mention a tool category, it's to orient you — not to endorse a product.
The playbook walks through decisions in order. The reference is a lookup for individual terms — BGP, NAT, WAF, and similar — in one or two sentences each.
Worth knowing: NetworkCrafts is a purely educational resource. We don't sell training, certifications, managed services, or software through this site.