Networking
What is a VPN and How Does It Work? Tunneling, Encryption, and Real-World Use
Understand how VPNs work under the hood: tunneling protocols, encryption, split tunneling, and real enterprise use cases beyond just hiding your IP address.
Blog
Deep-dive technical articles on cloud architecture, networking, security, databases, and infrastructure. Written by practitioners who build and scale production systems.
Networking
Why Do We Need IPv6? The Exhaustion Crisis and What Comes Next
IPv4 addresses have run out. Learn why IPv6 exists, how the exhaustion crisis unfolded, what NAT workarounds cost us, and why the transition matters now.
Cloud Architecture
IaaS vs PaaS vs SaaS: Cloud Service Models Explained with Real Examples
A principal cloud architect breaks down IaaS, PaaS, and SaaS with real-world examples, explaining when each model fits and the trade-offs most guides skip.
Networking
How DNS Resolution Works: The Complete End-to-End Process
Learn exactly how DNS resolution works from browser to authoritative nameserver. Recursive resolvers, caching, TTLs, and what happens when lookups fail.
Networking
DNS Record Types Explained: A, AAAA, CNAME, MX, TXT and More
A practical guide to every DNS record type you'll encounter: A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, PTR with real configuration examples.
Networking
TCP vs UDP: The Complete Guide to Transport Layer Protocols
A thorough comparison of TCP and UDP covering reliability, performance, use cases, and when QUIC changes the equation for modern applications.
Cloud Architecture
What Does Serverless Really Mean? Cutting Through the Marketing
A principal architect with 30 years of infrastructure experience explains what serverless actually means, when it works brilliantly, and when it falls flat.
Networking
How Does a CDN Work? Content Delivery Networks from Edge to Origin
Understand how CDNs cache and deliver content from edge servers, DNS-based routing, cache hierarchies, and when to use (or skip) a CDN.
Networking
Layer 4 vs Layer 7: Load Balancing, Firewalls, and Why It Matters
Understand the practical differences between Layer 4 and Layer 7 for load balancers, firewalls, and proxies with real architecture examples.
Cloud Architecture
EC2, EBS, EFS, Lambda: What They Really Are vs Physical Hardware
A veteran cloud architect maps AWS compute and storage services to their physical hardware equivalents, explaining what EC2, EBS, EFS, and Lambda really are under the hood.
Networking
The OSI Model Explained: All 7 Layers with Real-World Examples
Master the OSI model's 7 layers with practical examples, real protocols at each layer, and why this framework still matters for troubleshooting.
Networking
Routing Protocols Explained: OSPF, BGP, RIP, EIGRP and When to Use Each
A practical guide to routing protocols: OSPF, BGP, RIP, and EIGRP compared with real-world use cases, configurations, and selection criteria.