Internet, Networking, and API Fundamentals
From network communication to the complete processing of a request in an API Gateway.
Read article Corporate API Fundamentals and Architecture 
All articles · English
0 of 42 read 0%
TCP, UDP, Ports, and Sockets
From connection establishment to diagnosing timeouts, pooling, SNAT, and port exhaustion in API Gateways.
Read article
IP Addressing: IPv4, IPv6, Subnetting, and Routing
From CIDR prefixes and subnetting to diagnosing routes, NAT, MTU, and connectivity in API Gateways.
Read article
DNS, NAT, Proxies, and Load Balancers
From DNS resolution and address translation to TLS termination, health checks, and backend selection.
Read article
HTTP/1.1, HTTP/2, and HTTP/3
From semantics and framing to multiplexing, HPACK, QUIC, QPACK, and protocol translation in API Gateways.
Read article
HTTPS and TLS in Depth
From cryptography and TLS 1.2/1.3 handshakes to X.509 certificates, mTLS, HSTS, and API Gateway troubleshooting.
Read article
Cryptography: Symmetric, Asymmetric, Hashes, and Digital Signatures
From AES, hashes, HMAC, and digital signatures to key management, KMS, HSM, post-quantum cryptography, and troubleshooting.
Read article
Digital Certificates, PKI, and X.509
From identity, issuance, and trust chains to SAN, CSR, CRL, OCSP, HSM, mTLS, and API Gateway operations.
Read article
mTLS in Depth
From TLS 1.3 handshakes and client certificates to identity, authorization, API Gateways, service meshes, OAuth, and secure operations.
Read article
REST: Architecture and Best Practices
From Fielding's principles to resources, HTTP semantics, idempotency, caching, concurrency, OpenAPI, security, and API Gateway operations.
Read article
Richardson REST Maturity Model
From a single endpoint to hypermedia: levels 0 through 3, HTTP semantics, HATEOAS, assessment, governance, and enterprise API migration.
Read article
OpenAPI (Swagger): Contracts, Documentation, and Automation
From formal interface description to validation, linting, semantic diff, mocks, SDK generation, portals, governance, and API Gateways.
Read article
GraphQL, gRPC, and WebSocket
From schemas, resolvers, and N+1 to Protobuf, streaming, deadlines, persistent connections, security, and enterprise architecture criteria.
Read article
Authentication vs. Authorization
From identity proof to access decisions: credentials, tokens, OAuth, RBAC, ABAC, ReBAC and PBAC models, policy enforcement, workload identity, and troubleshooting.
Read article
Basic Auth, Digest, and API Keys
HTTP challenges, Base64, TLS, nonce, replay, storage, scopes, quotas, rotation, revocation, HMAC, and secure validation in API Gateways.
Read article
OAuth 2.0 in Depth: Flows, Tokens, and Security
Roles, endpoints, Authorization Code with PKCE, Client Credentials, refresh tokens, introspection, revocation, PAR, JAR, JARM, DPoP, mTLS, and API Gateway security.
Read article
OpenID Connect (OIDC): ID Tokens, Sessions, and Identity Federation
From user authentication to ID Token validation, UserInfo, assurance, SSO, federated logout, discovery, JWKS, and identity federation.
Read article
JWT, JWS, JWE, and JOSE in Depth
Claims, Base64url, signatures, MAC, algorithms, JWK, JWKS, key rotation, JWE, nested tokens, and secure validation in API Gateways.
Read article
SAML 2.0 in Depth
Assertions, AuthnRequest, bindings, metadata, XML Signature, SSO, SLO, NameID, federation, and enterprise security.
Read article
Identity Federation and Single Sign-On
Trust domains, SSO, sessions, brokers, SAML, OIDC, account linking, MFA, B2B, workloads, and API Gateway integration.
Read article
API Gateways: Concepts and Architecture
Data plane, control plane, policies, routing, security, traffic control, high availability, observability, governance, and troubleshooting.
Read article
Gateway Policies
Pipeline, ordering, scopes, authentication, authorization, validation, limits, transformation, routing, resilience, and observability.
Read article
Axway API Gateway: Architecture and Operation
Policy Studio, domains, Node Managers, runtime, API Manager, KPS, Cassandra, HA, security, observability, and operations.
Read article
Azure API Management (APIM)
Architecture, gateways, policies, tiers, private networking, security, high availability, observability, and automation.
Read article
API Security (OWASP API Security Top 10)
BOLA, authentication, properties, resources, functions, business flows, SSRF, configuration, inventory, and unsafe consumption.
Read article
CORS, CSP, HSTS, and Other HTTP Headers
Origins, preflight, credentials, CSP, nonces, HSTS, cross-origin isolation, caching, cookies, and troubleshooting.
Read article
Rate Limiting, Quotas, and Throttling
Algorithms, keys, costs, bursts, concurrency, distributed limits, 429, retries, sizing, and troubleshooting.
Read article
API Versioning
Compatibility, SemVer, selection strategies, coexistence, deprecation, Sunset, migration, testing, and governance.
Read article
Service Mesh (Istio, Linkerd, and Envoy)
Control plane, data plane, sidecars, ambient mode, mTLS, traffic management, resilience, observability, xDS, and multi-cluster.
Read article
Microservices and Integration Patterns
Bounded contexts, contracts, synchronous and asynchronous communication, Saga, Outbox, CQRS, Event Sourcing, and Strangler Fig.
Read article
Messaging: Kafka, RabbitMQ, AMQP, and JMS
Queues, logs, delivery, ordering, Kafka, RabbitMQ, AMQP, Jakarta Messaging, DLQ, security, capacity, and troubleshooting.
Read article
Observability: Logs, Metrics, and Tracing with OpenTelemetry
Telemetry, correlation, structured logs, metrics, cardinality, traces, OTLP, Collector, sampling, exemplars, and SLOs.
Read article
Kubernetes for APIs
Pods, workloads, Services, Gateway API, configuration, probes, autoscaling, scheduling, security, observability, and GitOps.
Read article
Chapter 3490 min read
90 min readAPI Deployment and Traffic Management Strategies
Blue-Green, Canary, Rolling, Recreate, Ring, Progressive Delivery, weighted traffic splitting, feature flags, shadow traffic, failover, and rollback.
Read article
Zero Trust Applied to APIs
Composite identity, per-request decisions, PDP, PEP, mTLS, proof of possession, policy-as-code, microsegmentation, and adaptive risk.
Read article
Open Finance and Open Banking in Brazil
Consent, participants, FAPI-BR, directory, standardized APIs, payment initiation, security, and end-to-end operations.
Read article
LGPD Applied to APIs
Personal data, principles, legal bases, minimization, data subject rights, retention, privacy by design, incidents, and governance.
Read article
High-Availability Banking Architectures
Critical operations, disruption tolerance, RTO, RPO, redundancy, consistency, recovery, reconciliation, and resilience testing.
Read article
API and Gateway Troubleshooting
Scientific method, layered diagnostics, networking, TLS, HTTP, policies, backends, Kubernetes, observability, and incident response.
Read article
Real-World Case Studies from Large Enterprises
Netflix, Amazon, Stripe, Shopify, LinkedIn, Google, GitHub, and Spotify: decisions, trade-offs, and transferable patterns.
Read article
Capstone Project: Complete API Platform
Integrating project with contracts, identity, gateways, services, events, Kubernetes, observability, resilience, and acceptance criteria.
Read article
Chapter 4275 min read
75 min readWhat Is the Model Context Protocol (MCP)?
A complete guide to MCP servers, architecture, tools, resources, prompts, security, authorization, and AI agent integration.
Read article
Certificate of Completion
Finish every chapter to unlock your track completion certificate and download it as PDF, PNG or JPG.
Get certificate