A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Type to find tags:
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HTML tags that convey information about a webpage, such as it's title or it's description, in a way that a computer program can understand.
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A server which a website lives on.
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a syntax for embedding structured data in HTML5, making use of vocabularies. If the question is about the popular vocabulary Schema.org, use the tag [schema.org].
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A popular content management system that powers many information websites . See http://www.mediawiki.org/ for more info.
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A content delivery network or content distribution network (CDN) is a system of computers containing copies of data placed at various nodes of a network.
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a popular technique for creating interactive websites, though other technologies (e.g. JSON) are often used instead of XML.
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HTTP Stands for "Hyper Text Transfer Protocol", and is the protocol that applications use to access documents/webpages/data from the world wide web.
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a web application framework developed by Microsoft to allow programmers to build dynamic web sites and web applications.
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a software application for retrieving, presenting, and traversing information resources on the World Wide Web.
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Page-Speed normally refers to the time it takes for a web-page to be presented to a browser in a "fully loaded" state.
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XML files created to make it easier for Search Engine crawlers and other bots to efficiently and fully crawl a website.
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Virtual Private Server - a term used by internet hosting services to refer to a virtual machine.
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A legal concept intended to protect the intellectual property rights of authors and artists by making unauthorized copying a civil or criminal offense.
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Organization that manages domain registrations
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IIS – formerly called Internet Information Server – is a web server application and set of feature extension modules created by Microsoft for use with Microsoft Windows.
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commonly understood as the act of asserting a user's or entity's identity, although in the wider sense it can refer to asserting the truthfulness of any kind of claim. Authentication…
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HTML tag displaying the title of a web page.
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normally associated when more than 1 user is using a web host that uses the same resources to serve their web content to internet.
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To make the conditions the best or the most favorable.
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a Free (libre), Open Source, Unix-like operating system.
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a free blog-publishing service owned by Google that allows private or multi-user blogs with time-stamped entries.
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System that handles large amounts of data in an organised fashion.
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the acronym for Internet Information Services, the webserver provided by Microsoft.
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a cross-browser Javascript library that provides abstractions for DOM traversal, event handling, animation, and Ajax interactions for rapid web development.
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a server that query and assign Human readable URL or IP Address.
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should refer to creating, editing, and displaying video on electronic devices. As video capture and playback vary significantly across platforms, it would be helpful to in…
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A description shown in search engine result pages about a website that is better quality than just a few lines of text.
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Position of a web site or a web page in Google results.
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a popular open source PHP-based CMS. There is a Drupal Stack Exchange at http://drupal.stackexchange.com/, so if your question is related to Drupal but not Pro Webmasters, then it should be …
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Questions relating to Webmasters using various Marketing methods to promote their online website(s).
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an Ecommerce platform written in PHP. It uses a configuration-based MVC system and heavily leverages Java style OOP patterns in the business logic, UI, and layout rendering application laye…
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Questions related to the search for a web hosting provider. See this question before posting: http://webmasters.stackexchange.com/questions/20838/how-to-find-web-hosting-that-meets-my-requirements
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applications that are accessed over the "web", which can mean the Internet, or an internal network (an intranet).
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Local Search Engine Optimization (local SEO) is a process of improving discoverability and visibility of web pages at a town, city or regional level, within location-based search functions (e.g. "resu…
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This refers to the optimisation of websites that provide content in multiple languages, or variants of languages. Common issues relate to mechanisms for directing users to content in their language, a…