Windows Phone in the context of Windows NT

An app store, also called an app marketplace or app catalog, is a type of digital distribution platform for computer software called applications, often in a mobile context. Apps provide a specific set of functions which, by definition, do not include the running of the computer itself. Complex software developed for personal computers may have a corresponding mobile app optimized for the device’s constraints. Today apps are normally designed to run on a specific mobile operating system—such as the contemporary iOS, iPadOS, Windows Phone, or Android—but in the past mobile carriers had their own portals for apps and related media content.

An app store can be thought as a restricted, commercial version of a package manager, although an app store provides additional services like app discovery, user reviews, security screening, licensing enforcement, and seamless integration of a payment system. Unlike traditional package managers, which prioritize dependency management and system integration, app stores focus on usability, monetization, and a curated user experience.

Internet Explorer (formerly Microsoft Internet Explorer and Windows Internet Explorer, commonly abbreviated as IE or MSIE) is a retired series of graphical web browsers developed by Microsoft that were used in the Windows line of operating systems. While IE has been discontinued on most Windows editions, it remains supported on certain editions of Windows, such as Windows 10 LTSB/LTSC. Starting in 1995, it was first released as part of the add-on package Plus! for Windows 95 that year. Later versions were available as free downloads or in-service packs and included in the original equipment manufacturer (OEM) service releases of Windows 95 and later versions of Windows. Microsoft spent over US$100 million per year on Internet Explorer in the late 1990s, with over 1,000 people involved in the project by 1999. In 2015, Microsoft Edge was released to succeed Internet Explorer 11 as Microsoft's primary web browser. New feature development for Internet Explorer was discontinued the following year year, and support for the browser officially ended on June 15, 2022, for Windows 10 Semi-Annual Channel (SAC) editions.

Internet Explorer was once the most widely used web browser, attaining a peak of 95% usage share by 2003. It has since fallen out of general use after retirement. This came after Microsoft used bundling to win the first browser war against Netscape, which was the dominant browser in the 1990s. Its usage share has since declined with the launches of Firefox (2004) and Google Chrome (2008) and with the growing popularity of mobile operating systems such as Android and iOS that do not support Internet Explorer. Microsoft Edge, IE's successor, first overtook Internet Explorer in terms of market share in November 2019. Versions of Internet Explorer for other operating systems have also been produced, including an Xbox 360 version called Internet Explorer for Xbox and for platforms Microsoft no longer supports: Internet Explorer for Mac and Internet Explorer for UNIX (Solaris and HP-UX), and an embedded OEM version called Pocket Internet Explorer, later rebranded Internet Explorer Mobile, made for Windows CE, Windows Phone, and, previously, based on Internet Explorer 7, for Windows Phone 7.

Microsoft is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions. Established on April 4, 1975, to develop and sell BASIC interpreters for the Altair 8800, Microsoft rose to dominate the home computer operating system market with MS-DOS in the mid-1980s, followed by the Microsoft Windows line of operating systems. Microsoft would also come to dominate the office suite market with Microsoft Office. The company has diversified in recent years into the video game industry with the Xbox, the Xbox 360, the Xbox One, and the Xbox Series X/S as well as into the consumer electronics and digital services market with Zune, MSN and the Windows Phone OS.

The company's initial public offering was held on March 14, 1986. The stock, which eventually closed at $27.75 a share, peaked at $29.25 a share shortly after the market opened for trading. After the offering, Microsoft had a market capitalization of $519.777 million. Microsoft has subsequently acquired over 225 companies, purchased stakes in 64 companies, and made 25 divestments. Of the companies that Microsoft has acquired, 107 were based in the United States. Microsoft has not released financial details for most of these mergers and acquisitions.

Microsoft Mobile Oy was a Finnish subsidiary of Microsoft Devices involved in the development and manufacturing of mobile phones. Based in Keilaniemi, Espoo, it was established in 2014 following the acquisition of Nokia's Devices and Services division by Microsoft in a deal valued at €5.4 billion, which was completed in April 2014. Nokia's then-CEO, Stephen Elop, joined Microsoft as president of its Devices division following the acquisition, and the acquisition was part of Steve Ballmer's strategy to turn Microsoft into a "devices and services" company. Under a 10-year licensing agreement, Microsoft Mobile held rights to sell feature phones running the S30/S30+ platform under the Nokia brand.

Originally Microsoft had established a major partnership with Nokia in 2011, in which the company exclusively produced smartphones using the Windows Phone platform, and promoted Microsoft services on its feature phone products (including Bing search). Microsoft also licensed Here Technologies data for its own mapping services. While Nokia's resultant Lumia range had the largest market share out of all Windows Phone vendors, Nokia's overall market share was falling rapidly due to competition from other major vendors, resulting in a dire financial situation. In September 2013, Microsoft announced its acquisition of Nokia's devices and services businesses, which closed with the formation of a Finnish subsidiary, Microsoft Mobile. On smartphones, the Nokia name was phased out in favour of Microsoft branding on future Lumia products.

Candy Crush Saga is a free-to-play tile-matching video game released by King on April 12, 2012, originally for Facebook; other versions for iOS, Android, Windows Phone, and Windows 10 followed. It is a variation of their browser game Candy Crush.

In the game, players complete levels by swapping colored pieces of candy on a game board to make a match of three or more of the same color, eliminating those candies from the board and replacing them with new ones, which could potentially create further matches. Matches of four or more candies create unique candies that act as power-ups with larger board-clearing abilities. Boards have various goals that must be completed within a fixed number of moves, such as collecting a specific number of a type of candy.

Windows Phone 7 (WP7) is the first release of the Windows Phone mobile client operating system, released worldwide on October 21, 2010, and in the United States on November 8, 2010. It runs on the Windows CE 6.0 kernel. It serves as the successor to Windows Mobile 6.5.

Windows Phone 7 was a complete overhaul of Microsoft's previous mobile Windows platforms. It was designed with the distinct flat-styled Metro interface. Due to shell changes, Windows Phone 7 cannot run Windows Mobile 6 applications. The first major update to Windows Phone 7 was Windows Phone 7.5, codenamed "Mango", which was globally released on September 27, 2011. Windows Phone 7.x was succeeded by Windows Phone 8, which was released on October 29, 2012; existing Windows Phone 7.x hardware could not upgrade to the incompatible Windows Phone 8 software. As a compromise to existing users, Microsoft released Windows Phone 7.8 on January 31, 2013, adding a few features backported from Windows Phone 8, such as a more customizable start screen and the new bootscreen.

The Surface Pro X is a 2-in-1 detachable tablet computer developed by Microsoft. It was developed alongside and was announced on 2 October 2019 alongside the Surface Pro 7 and Surface Laptop 3. Updated hardware was announced alongside Surface Laptop Go and Surface accessories on October 1, 2020 and September 22, 2021. The device starts at $899.99 USD / £849.99.

The Surface Pro X comes with a Microsoft SQ1 or SQ2 ARM processor, which the company claimed has three times the performance of an x86 MacBook Air, whilst also having a 13-hour battery life. This is due to the increased power efficiency of ARM processors compared to traditional x86 processors. Microsoft has previously used ARM processors in the discontinued Surface RT and Windows Phone devices.

Windows 8 is a major release of the Windows NT operating system developed by Microsoft. It was released to manufacturing on August 1, 2012, made available for download via MSDN and TechNet on August 15, 2012, and generally released for retail on October 26, 2012.

Windows 8 introduced major changes to the operating system's platform and user interface with the intention to improve its user experience on tablets, where Windows competed with mobile operating systems such as Android and iOS. In particular, these changes included a touch-optimized Windows shell and start screen based on Microsoft's Metro design language, integration with online services, the Windows Store, and a new keyboard shortcut for screenshots. Many of these features were adapted from Windows Phone, and the development of Windows 8 closely parallelled that of Windows Phone 8. Windows 8 also added support for USB 3.0, Advanced Format, near-field communication, and cloud computing, as well as a new lock screen with clock and notifications. Additional security features—including built-in antivirus software, integration with Microsoft SmartScreen phishing filtering, and support for Secure Boot on supported devices—were introduced. It was the first Windows version to support ARM architecture under the Windows RT branding. Single-core CPUs and CPUs without PAE, SSE2 and NX are unsupported in this version.

Windows Phone Store was a digital distribution platform developed by Microsoft for the Windows Phone. It allowed publishers to release apps which could be downloaded to users smartphones.

The app store was initially launched as Windows Phone Marketplace alongside Windows Phone 7 in October 2010. With the rollout of Windows Phone 7.5, Microsoft unveiled the Marketplace, which offered over-the-air installation of apps. In August 2012, Microsoft renamed the Marketplace to Windows Phone Store. In July 2015, the Windows Phone Store was replaced by the Windows Store, which would act as a unified solution for all Windows-powered devices. This process was complemented by the Apps on Windows website, an interim solution before the unified Windows Store. The Windows Phone Store shut down for Windows Phone 8.1 systems on December 16, 2019.

Groove Music is a discontinued audio player software application and associated music streaming service from Microsoft. Originally known as Xbox Music before rebranding to Groove Music in 2015, the app was included with Windows 8, Windows 8.1 and Windows 10 (as well as very early builds of Windows 11).

The music streaming service, which was called Groove Music Pass, was supported across Windows, Xbox video game consoles, Windows Phone, as well as Android and iOS. As of 2014, the Groove catalogue had over 50 million tracks. Its subscription service Groove Music Pass was officially discontinued on December 31, 2017, and the Android and iOS versions of the Groove Music app were discontinued in December 2018, restricting the player to its native Microsoft Store base.

The Xbox network, formerly known and commonly referred to as Xbox Live, is an online multiplayer gaming and digital media delivery service created and operated by Microsoft Gaming for the Xbox brand. It was first made available to the original Xbox console on November 15, 2002. An updated version of the service, adding the Xbox Live Marketplace, became available with the Xbox 360 console launch in November 2005, and a further enhanced version was released in 2013 with the Xbox One. The service is used on the latest Xbox Series X and Series S and, in addition to a Microsoft account, is the account for Xbox ecosystem; accounts can store games and other content.

The service was extended in 2007 across the Windows platform, named Games for Windows – Live, now defunct, which made most aspects of the system available on Windows computers. The Microsoft Store and Xbox app are now used to cross over the Xbox ecosystem into PC gaming, in addition to handhelds and mobile phones as part of the Play Anywhere initiative. Microsoft's former mobile operating system, Windows Phone, included full Xbox Live functionality until it was discontinued. The service shut down for the original Xbox on April 15, 2010, and original Xbox Games are now only playable online through Insignia, an unofficial Xbox Live replacement service, or through local area network (LAN) tunneling applications.

Zune was a brand of digital media products and services that was marketed by Microsoft from November 2006 until it was discontinued in June 2012. Zune consisted of a line of portable media players, a music subscription service known as Zune Music Pass plus Zune Marketplace for music, TV and movies, streaming services for the Xbox 360 game console, and the Zune software media player for Windows computers which also acted as desktop sync software for Windows Phone.

Zune started and revolved around its line of portable media players (PMP) created in cooperation with Toshiba. Microsoft aimed to challenge and beat Apple, whose iPod line held an enormous market share. Three hard disk players ranging from 30 GB to 120 GB were released, alongside six flash players. However, its overall market share in the U.S. remained low, well below Apple and also lagged behind the SanDisk Sansa and Creative Zen. Microsoft discontinued all Zune hardware in October 2011. Zune digital content distribution continued until 2012, when it was replaced by the Xbox Music and Xbox Video brands.