AWSDeep Dive
AWS IAM: From Principal to Decision
Follow one AWS API request through principals, policies, guardrails, temporary role credentials, and cross-account authorization.
intermediate · Reviewed Sep 2026Explore
Infra Illustrated — explore cloud infrastructure by topic
TOPIC MAP · 29 VISUALS
Choose a collection, inspect a system, then open its visual reference.
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29 visualizations
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AWSFlow Explorer
AWS Identity and Credential Flows
Follow a human or workload from its starting credentials through IAM Identity Center or STS to a signed request from a temporary role session.
advanced · Reviewed Sep 2026Explore
FoundationsDeep Dive
Containers, Illustrated
Follow one Linux process as a runtime gives it an isolated view, resource controls, filesystem layers, and a lifecycle.
foundational · Reviewed Sep 2026Explore
AWSDeep Dive
EC2 Auto Scaling, Illustrated
Start with one application on one computer, then see how AWS replaces failed instances, adds capacity, and updates a running fleet.
advancedExplore
DevOps & SREDeep Dive
Git: Snapshots and Moving Labels
Start with one file and a line of saved versions, then add staging, branches, merging, remotes, and undo to the same picture, one idea at a time.
foundational · Reviewed Oct 2026Explore
KubernetesFlow Explorer
How Kubernetes Coordinates Through API State
Follow one Deployment from accepted intent through reconciliation, placement, node execution and readiness, then diagnose where the system can stall.
intermediate · Reviewed Sep 2026Explore
KubernetesDeep Dive
Kubernetes Networking
Follow a web app calling an API: start with a Pod, add a Service, then decide how traffic enters and who may connect.
advanced · Reviewed Sep 2026Explore
FoundationsDeep Dive
Linux Foundations
A complete visual Linux tutorial: build durable models of identity, storage, processes, networking, packages, shells, security, and diagnosis.
foundational · Reviewed Sep 2026Explore
FoundationsFlow Explorer
Networking, Illustrated
Follow one HTTPS request from hostname resolution to a server, and see which network layer makes each decision.
foundational · Reviewed Sep 2026Explore
DevOps & SREDeep Dive
OpenTelemetry
Trace telemetry from application instrumentation through the collector pipeline to observability backends.
intermediateExplore
DevOps & SREDeep Dive
Prometheus: From Metrics to PromQL
Explore a living Prometheus monitoring system over the ACME Shop production architecture. Step through scraping, relabeling, TSDB Head and WAL internals, PromQL transformations, Alertmanager routing, and production incident response.
intermediate · Reviewed Sep 2026Explore
AWSVisual Brief
RDS Backup Retention
See how RDS uses automated snapshots and transaction logs to maintain a moving window for point-in-time recovery.
intermediate · Reviewed Sep 2026Explore
FoundationsFlow Explorer
SSH, Illustrated
Watch SSH establish server trust, build encrypted transport, authenticate a user, and open logical channels.
foundational · Reviewed Sep 2026Explore
AWSFlow Explorer
VPC Packet Flow
Follow a request and its reply through VPC routes, gateways, address translation, security groups, and network ACLs.
advanced · Reviewed Sep 2026Explore
AWSDeep Dive
ALB vs NLB: which should you use?
Use ALB for HTTP-aware routing and NLB for transport protocols or zonal static IPs. See where GWLB and Global Accelerator fit when those are separate requirements.
intermediate · Reviewed Sep 2026Explore
AWSDeep Dive
AWS ENI: the network identity behind your workload
See how an Elastic Network Interface binds VPC addresses, subnet placement, security, routing, service ownership, and scaling limits into one network identity.
intermediate · Reviewed Sep 2026Explore
AWSDeep Dive
AWS Network Charges: Distance, Direction, Path
Follow the same gigabytes from one instance in Mumbai to a neighbour, another zone, N. Virginia and the internet, then through the NAT gateways, endpoints and load balancers that add their own charge.
intermediate · Reviewed Oct 2026Explore
FoundationsFlow Explorer
CORS, One Request at a Time
Follow one request from a page on app.b.com to api.a.com and back. See when the browser sends a preflight, when the request reaches the server but the script still can't read the answer, and why the console's CORS error is often hiding a 500, a redirect or a CDN cache. Change the request or the server and watch the outcome move.
foundational · Reviewed Oct 2026Explore
DevOps & SREFlow Explorer
DevSecOps Pipeline
Explore where source, dependency, image, signing, policy, and deployment security checks fit in delivery pipelines.
intermediateExplore
FoundationsDeep Dive
Docker Multi-Architecture
Understand image indexes, platform manifests, emulation, native builders, and cross-platform container delivery.
intermediateExplore
DevOps & SREOperational Reference
GitHub Actions Cheatsheet
Search practical workflow syntax, triggers, expressions, matrices, artifacts, caching, secrets, and deployment patterns.
foundationalExplore
FoundationsOperational Reference
HTTP Status Codes as a City Map
Five districts, one for each first digit, and a sign for every status code you are likely to meet. Choose a sign to see what the server is saying, who acts next, whether to ask again and which box probably wrote it.
foundational · Reviewed Oct 2026Explore
KubernetesDeep Dive
Kubernetes DNS
Follow a Pod's DNS lookup through resolver search rules, CoreDNS, Kubernetes records, caches, and upstream resolvers.
intermediate · Reviewed Sep 2026Explore
KubernetesDeep Dive
Kubernetes Gateway API and Ingress
Follow an external request from GatewayClass and listeners through Route attachment, TLS, cross-namespace trust, and backend selection.
advanced · Reviewed Sep 2026Explore
KubernetesDeep Dive
Kubernetes Services and Traffic Distribution
Follow a connection from a stable Service address through EndpointSlices, proxy rules, traffic policy, and a changing set of backend Pods.
advanced · Reviewed Sep 2026Explore
AIDeep Dive
LangChain: From One Model Call to an Agent
Start with one HTTP call to a model. Add the message list, a tool, and a loop, one idea at a time, then see which of those pieces LangChain names for you.
foundational · Reviewed Oct 2026Explore
AIDeep Dive
LangGraph: The Agent Loop as a Graph
Redraw the loop that calls a model and runs its tools as boxes and arrows over one shared record, then see what that buys: your own routing, saved state, resume after a crash, a pause for approval, specialist agents and a run you can watch.
intermediate · Reviewed Oct 2026Explore
FoundationsFlow Explorer
OAuth 2.0 & OIDC
Walk through authorization flows, PKCE, tokens, identity claims, and the trust boundaries behind modern sign-in.
intermediateExplore
KubernetesDeep Dive
Pod Networking and CNI
Follow a Pod from sandbox creation through CNI attachment, address allocation, same-node and cross-node forwarding, cleanup, and diagnosis.
advanced · Reviewed Sep 2026Explore
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