Clear explanations of IT concepts, protocols, architecture and enterprise technologies.
Understand the technology behind your infrastructure.
Event ID 4688 records every new process on Windows when auditing is enabled. Learn what it captures, how to enable it with Group Policy, and how to use it for security monitoring and incident response.
Orchestration automates the coordination of services, containers, and infrastructure. This guide covers container orchestration (Kubernetes), workflow orchestration (Logic Apps, Airflow), and infrastructure orchestration (Terraform), with architecture and use cases.
Base64 encodes binary data as ASCII text for safe transport over text protocols. Used in email attachments (MIME), data URIs, JWT tokens, and API payloads. Per RFC 4648, it increases data size by ~33%. Base64 is encoding, not encryption.
Prometheus is a CNCF open-source monitoring system that collects time-series metrics via HTTP pull, stores in a custom TSDB, and alerts via PromQL rules. Covers architecture, exporters, Grafana integration, and comparison with Zabbix and Datadog.
ETL extracts data from sources, transforms it, and loads it into a warehouse. Covers the three stages, ETL vs ELT, tools (SSIS, ADF, Airflow, dbt), and when to use each approach. Essential for data engineering and business intelligence.
LoRaWAN is a low-power, wide-area network protocol that connects IoT devices over distances up to 15 km on unlicensed spectrum. How it works, when to use it, and how it compares to NB-IoT and Sigfox.
Docker packages applications into containers that include code, runtime, and dependencies. Containers share the host OS kernel, making them lighter than VMs. This guide covers Docker architecture, images, Dockerfiles, and security considerations.
CCTV is a video surveillance system using cameras, recorders (DVR/NVR), and monitors. Modern IP CCTV adds remote access, AI analytics, and integration with access control. Covers architecture, IP vs analog, storage, and cybersecurity risks.
