Foundations
Colocation vs Cloud vs On-Premises Infrastructure
A neutral comparison of colocation, cloud and on-premises infrastructure, focusing on ownership, control, staffing, resilience and cost structure.
Guide library
Digital Infrastructure Articles
Browse the complete guide library by infrastructure layer and operating concern.
24 guides: retained source articles remain at their established paths, while new guides fill important gaps in facilities, compute, recovery, capacity and lifecycle planning.
Foundations
Foundations
Digital Infrastructure Layers Explained
A practical map of the physical, network, compute, storage, platform and application layers that support modern digital services.
Facilities
Facilities
Data Centre Power and Cooling Explained
A practical explanation of utility feeds, UPS systems, generators, power distribution, cooling and the facility dependencies behind digital services.
Facilities
How Data Centers Connect to the Internet
A plain-language explanation of how data centers connect to the internet through carriers, meet-me rooms, cross-connects, upstream networks, and exchange points.
Cloud Architecture
Cloud Architecture
How Cloud Regions and Availability Zones Actually Work
A clear, architecture-first explanation of how cloud regions and availability zones are designed, connected, and operated — and why they matter for resilience and latency.
Network & Delivery
Network & Delivery
Anycast Routing Explained — Why CDNs and DNS Work So Fast
A plain-language explanation of anycast routing and why it allows DNS providers, CDNs, and global platforms to deliver traffic from the nearest location.
Network & Delivery
Edge Computing Explained
A practical explanation of edge computing, including local processing, latency, bandwidth, resilience, management and the difference between edge sites and cloud regions.
Network & Delivery
How Content Delivery Networks (CDNs) Actually Work
A plain-language explanation of how content delivery networks work, including edge caching, origin fetches, anycast routing, and why CDNs reduce latency.
Network & Delivery
How Internet Routing and Peering Actually Work
A plain-language, infrastructure-level explanation of how internet routing works, including Autonomous Systems, BGP, transit, peering, and internet exchange points.
Network & Delivery
Network Path Diversity Explained
A practical guide to diverse carrier paths, shared ducts, buildings, exchanges and upstream dependencies in resilient network design.
Network & Delivery
Transit vs Peering vs Paid Peering — What Networks Actually Buy
A plain-language explanation of internet transit, settlement-free peering, and paid peering. Understand how networks exchange traffic and what they are actually buying.
Network & Delivery
What Internet Exchange Points (IXPs) Actually Do
A plain-language explanation of Internet Exchange Points (IXPs): what they are, how peering works at an exchange, and why IXPs reduce cost and latency.
Network & Delivery
Why Latency Happens on the Internet
A plain-language explanation of why internet latency happens, including physical distance, routing paths, congestion, packet processing, and protocol overhead.
Compute & Storage
Compute & Storage
Consistency vs Availability Explained
A detailed, plain-language explanation of consistency vs availability in distributed systems, including trade-offs, real-world examples, and why systems cannot maximize both.
Compute & Storage
How Data Replication Works in Modern Infrastructure
A plain-language explanation of data replication, including copies, regions, consistency, latency, durability, and recovery trade-offs in modern infrastructure.
Compute & Storage
Servers, Storage and Virtualization Explained
A plain-language guide to physical servers, virtual machines, containers, storage systems and the trade-offs between consolidation and isolation.
Resilience
Resilience
Backup vs Replication vs Disaster Recovery
A practical comparison of backups, replicas and disaster recovery, including what each protects, what it does not protect and how recovery should be tested.
Resilience
Redundancy, High Availability and Fault Tolerance
A clear comparison of redundancy, high availability and fault tolerance, including failover, shared dependencies and common design mistakes.
Resilience
What Failure Domains Mean in Digital Infrastructure
A plain-language explanation of failure domains, fault isolation, blast radius, and how infrastructure systems are designed to limit outages.
Operations
Operations
Capacity Planning for Digital Infrastructure
A practical guide to demand, headroom, bottlenecks, growth forecasting and capacity decisions for networks, servers, storage and shared services.
Operations
Infrastructure Lifecycle and Technical Debt
A guide to support life, warranties, patchability, replacement planning, technical debt and the operational risks of ageing infrastructure.
Operations
Monitoring vs Observability Explained
A plain-language comparison of monitoring and observability, including alerts, metrics, logs, traces, service context and operational decision-making.
Operations
What Observability Means in Modern Infrastructure
A detailed, plain-language explanation of observability in modern infrastructure, including metrics, logs, traces, and how systems are monitored and understood in real-world operations.
Governance
Governance
Vendor Dependency and Cloud Concentration Risk
A practical guide to shared providers, cloud concentration, portability, exit planning and the difference between contractual and technical resilience.