Definition: "W3Tvars.pm" stands for "Web Application Frameworks, Security, and Virtualization," which was published in 2018 by IBM. It's a comprehensive guide to web frameworks, security, and virtualization. The primary purpose of this document is to provide detailed information on these topics: - Web Application Frameworks: This includes a section discussing the basics of web development frameworks such as jQuery, React, Angular, Vue.js, and others. - Security: Topics include secure design, testing, and authentication, as well as securing code and data in different environments like Node.js, Ruby on Rails, Django. - Virtualization: Covers how to manage virtual machines (VMs), the use of containers, and deploying applications across cloud providers such as Amazon Web Services (AWS) and Google Cloud Platform (GCP). This publication is aimed at both beginners and experienced web developers looking to understand the complexities of modern web development.