IT Glossary & Dictionary

A utility for creating and extracting archive files that combine multiple files and directories into a single file.

The fundamental communication protocol suite of the internet that defines how data is packaged, addressed, transmitted, and received.

Two transport layer protocols: TCP provides reliable, ordered delivery while UDP provides fast, connectionless delivery without guarantees.

The implied cost of additional rework caused by choosing a quick solution now instead of a better approach that would take longer.

An open-source tool for provisioning and managing cloud infrastructure using declarative configuration files.

The smallest unit of execution within a process, allowing concurrent operations to run within a single program.

A database optimized for storing and querying timestamped data points like metrics, sensor readings, and event logs.

A terminal multiplexer that allows running multiple terminal sessions within a single window, with detach/reattach capability.

A rate limiting algorithm that allows burst traffic by accumulating tokens at a fixed rate and consuming them per request.

Interactive process viewers that display real-time system resource usage including CPU, memory, and running processes.

A network diagnostic tool that shows the path packets take from source to destination, listing each hop along the way.

A sequence of database operations that are treated as a single unit — either all succeed or all are rolled back.

A database object that automatically executes a specified function when certain events (INSERT, UPDATE, DELETE) occur on a table.

A source control strategy where developers integrate small changes directly into the main branch frequently, often multiple times per day.

A methodology of twelve best practices for building modern, scalable, maintainable software-as-a-service applications.

A security method requiring two different forms of identification before granting access to an account.

Optional annotations that indicate the expected types of variables, function parameters, and return values.

A typed superset of JavaScript that adds static type checking, interfaces, and advanced IDE support to JavaScript development.