IT Glossary & Dictionary

10 terms covering Linux, Python, DevOps, Networking, Databases, and more.

Clear definitions and in-depth explanations for beginners and professionals.

All Cloud Computing (35) Databases (51) DevOps (60) Linux (60) Networking (46) Programming Concepts (40) Python (55) Security (40) Web Development (53)

A-Z: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Clear

O

OAuth 2.0

Security

An authorization framework that allows third-party applications to access user resources without sharing passwords.

OAuth Scope

Web Development

A mechanism in OAuth that limits an application's access to a user's account to specific resources or actions.

Object-Oriented Programming (OOP)

Programming Concepts

A programming paradigm that organizes software design around objects containing data and behavior.

Object Storage

Cloud Computing

A storage architecture that manages data as objects with metadata and unique identifiers, ideal for unstructured data at scale.

Observability

DevOps

The ability to understand a system's internal state from its external outputs through metrics, logs, and traces.

Observer Pattern

Programming Concepts

A design pattern where an object (subject) maintains a list of dependents (observers) that are notified automatically of state changes.

ORM (Object-Relational Mapping)

Databases

A technique that lets you interact with a database using object-oriented code instead of writing raw SQL queries.

OSI Model

Networking

The seven-layer Open Systems Interconnection model that standardizes network communication functions from physical transmission to application protocols.

Overlay Network

Networking

A virtual network built on top of an existing physical network, enabling features like container networking and VPNs.

OWASP Top 10

Security

A regularly updated list of the ten most critical web application security risks, published by the Open Web Application Security Project.

How Our IT Glossary Helps You

More than just definitions — our glossary is a learning tool that connects concepts to practical resources.

📚 Clear Definitions

Every term has a short definition for quick reference and a detailed explanation for deeper understanding.

🎯 Difficulty Levels

Each term is tagged as Beginner, Intermediate, or Advanced so you know if it matches your current knowledge.

🔗 Linked to eBooks

Terms link to relevant eBooks so you can go from a quick definition to in-depth learning in one click.

🔭 9 Categories

Browse by topic area — filter by category and A-Z letter to find exactly what you need in seconds.

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Frequently Asked Questions

What is the Dargslan IT Glossary?

The Dargslan IT Glossary is a comprehensive dictionary of 10 information technology terms covering 9 categories including Cloud Computing, Databases, DevOps, Linux, Networking, Programming Concepts. Each term includes a clear definition, an in-depth explanation, difficulty level, and links to related eBooks for further learning.

How many terms does the glossary contain?

The glossary currently contains 10 terms across 9 categories. We regularly add new terms to keep the glossary current with the latest technologies and concepts.

Who is this glossary for?

The glossary is designed for anyone working in or learning about IT — from complete beginners encountering unfamiliar terms to experienced professionals looking for precise definitions. Each term includes a difficulty badge (Beginner, Intermediate, or Advanced) so you can find content at your level.

Can I browse terms by category?

Yes. Use the category pills at the top of the glossary to filter terms by topic such as Cloud Computing, Databases, DevOps, Linux, Networking, Programming Concepts. You can also use the A-Z letter filter to jump to terms starting with a specific letter, or combine both filters.

How are glossary terms linked to eBooks?

Many glossary terms are linked to relevant eBooks in our store. When you read a term definition, you will see recommended books that cover that topic in depth — making it easy to go from a quick definition to comprehensive learning.

Is the glossary free to use?

Yes, the entire IT glossary is completely free. Browse, read, and learn from all 10 terms without any registration or payment required.

How do I find a specific term?

You can use the A-Z letter navigation to jump to terms starting with a specific letter, filter by category to narrow results, or use the search bar in the header to find any term by name. Each term has its own dedicated page with a full explanation.