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**Cloud Computing*** Dynamic horizontal scaling, dynamic vertical scaling, upsizing, and inward scaling are types of resource pooling.* A type of resource pool that is usually configured using one of several available templates chosen by the cloud consumer during provisioning is the "Virtual server pool".**Web 2.0 Technology*** The world wide web (WWW) is a system of interconnected resources accessed over the internet.* Two basic components of the web are: Web browser client and Web server.* Uniform Resource Locator (URL) is a standard syntax used for creating identifiers that point to web-based resources.* Hypertext Transfer Protocol (HTTP) is the primary communication protocol used to exchange content and data throughout the world wide web.**Mark-up Languages*** Mark-up languages (HTML, XML) provide a lightweight means of expressing web-centric data and meta.* HTML is used for expressing the presentation of web pages, while XML allows for the definition of vocabularies used to associate meaning to web-based data via metadata.**Web Applications*** A distributed application that uses Web-based technologies is typically considered a Web application.* These applications can be found in all kinds of cloud-based environments due to their high accessibility.**Review Questions and MCQs (Quick Quiz)**The review questions and MCQs are intended to test the reader's understanding of the concepts discussed in the chapter.