Object-oriented programming 25 Applications 56 Design Patterns 20 Strategies 116 Continuous Integration - CI 2 Testing 11 Characteristic 52 Protocols 20 Communication 9 Data Structure 5 Version Control 6

PHP 51 Python 4 Ruby 1 TypeScript 3 JavaScript 23 Erlang 2 Java 3 General 4 Python 0 Go 3 Perl 2 Swift 1

NoSQL 9 Relational Databases 16 Concepts 8 General 5 Data Warehouse 2 Time Series Databases 1 Data Types 1

Terraform 1 Cloud Computing 13 Server 4 Network 26 Virtualization 3 Ansible 1 Architecture 7 Characteristics 3

Cascading Style Sheets - CSS 3 Leaner Style Sheets - LESS 1 Syntactically Awesome Stylesheets - Sass 1

Attack Methods 18 Security Mechanisms 12 Organisations 1 Famous Security Loopholes 3

HTML 3 XML 6 Extensible Hypertext Markup Language - XHTML 1 Markdown 1

CSS 1

SCRUM 5 General 1 Kanban 1 Extreme Programming - XP 1 Crystal 5 Dynamic Systems Development Method - DSDM 1 Feature Driven Development - FDD 1

Applications 2

Characteristics 3 Strategies 2 Applications 2