IT Explained

What is a Hypervisor? Definition, Types & Use Cases

A hypervisor is software that creates and manages virtual machines. Learn about Type 1 vs Type 2 hypervisors, ESXi, Hyper-V, KVM, and virtualization best practices.

What is iSCSI? Definition, How It Works & Use Cases

iSCSI (Internet Small Computer System Interface) enables block-level storage access over IP networks. Learn how iSCSI works, its benefits, and implementation best practices.

What is SAN? Definition, How It Works & Use Cases

SAN (Storage Area Network) provides high-speed block storage access over dedicated networks. Learn how SAN works, Fibre Channel vs iSCSI, and enterprise use cases.

What is NAS? Definition, How It Works & Use Cases

NAS (Network Attached Storage) provides centralized file storage accessible over a network. Learn how NAS works, its benefits, and best practices for businesses.

What is RAID? Definition, How It Works & Use Cases

RAID (Redundant Array of Independent Disks) combines multiple drives for improved performance, reliability, or both. Learn RAID levels, configurations, and best practices.

What is PowerShell? Definition, How It Works & Use Cases

PowerShell is Microsoft's command-line shell and scripting language for Windows automation. Learn how PowerShell works, its cmdlets, and best practices.

What is Bash? Definition, How It Works & Use Cases

Bash is a powerful Unix shell and command language for automation and system administration. Learn how Bash works, its scripting capabilities, and best practices.

What is Linux? Definition, How It Works & Use Cases

Linux is an open-source operating system kernel powering everything from smartphones to supercomputers. Learn how Linux works, its distributions, and why it dominates enterprise computing.

What is Git? Definition, How It Works & Use Cases

Git is a distributed version control system that tracks changes in source code. Learn how Git works, its core concepts, and best practices for developers.

What is Ansible? Definition, How It Works & Use Cases

Ansible is an agentless automation tool for configuration management, application deployment, and IT orchestration. Learn how Ansible works with YAML playbooks.

What is Terraform? Definition, How It Works & Use Cases

Terraform is HashiCorp's Infrastructure as Code (IaC) tool that manages cloud resources through declarative configuration files. Learn how it works and best practices.

What is Serverless? Definition, How It Works & Use Cases

Serverless computing lets developers run code without managing servers. Learn how serverless works, its benefits, and best practices for modern applications.

What is Microservices? Definition, How It Works & Use Cases

Microservices architecture breaks applications into independent services that communicate via APIs. Learn how microservices work, benefits, and implementation best practices.

What is JWT? Definition, How It Works & Use Cases

JWT (JSON Web Token) is a compact, URL-safe token format for securely transmitting information between parties. Learn how JWT works, its structure, and authentication use cases.

What is OAuth? Definition, How It Works & Use Cases

OAuth is an authorization framework that lets apps access user data without passwords. Learn how OAuth 2.0 works, its security benefits, and implementation best practices.

What is LDAP? Definition, How It Works & Use Cases

LDAP (Lightweight Directory Access Protocol) is a protocol for accessing and managing directory services. Learn how LDAP works, its use cases, and implementation best practices.

What is Single Sign-On? Definition, How It Works & Use Cases

Single Sign-On (SSO) allows users to access multiple applications with one login. Learn how SSO works, its protocols like SAML and OAuth, and implementation best practices.

What is PKI? Definition, How It Works & Use Cases

PKI (Public Key Infrastructure) provides secure digital identity management through certificates and cryptographic keys. Learn how PKI works and its critical role in cybersecurity.

What is SSL Certificate? Definition, How It Works & Use Cases

SSL certificates enable secure HTTPS connections by encrypting data between browsers and servers. Learn how SSL/TLS certificates work and best practices.

What is a Network Switch? Definition, How It Works & Use Cases

A network switch is a Layer 2 device that connects devices within a LAN using MAC addresses. Learn how switches work, VLAN configuration, and best practices.

What is a Router? Definition, How It Works & Use Cases

A router is a network device that forwards data packets between networks. Learn how routers work, routing protocols like BGP and OSPF, and best practices.