WhatsApp

WhatsApp
source
Name	WhatsApp
Developer	Meta Platforms
Released	24 January 2009
Operating system	iOS, Android, KaiOS, Microsoft Windows, macOS
Genre	Instant messaging, Voice over IP
License	Proprietary software with freeware for most services

WhatsApp is a globally dominant instant messaging and Voice over IP service owned by Meta Platforms. Initially founded by Brian Acton and Jan Koum, former employees of Yahoo!, the application revolutionized personal communication by leveraging internet data plans instead of traditional SMS. Its acquisition by Facebook in 2014 for approximately US$19 billion marked one of the largest technology acquisitions in history, integrating it into the social media giant's ecosystem.

History

The application was created in 2009 by Jan Koum, who incorporated WhatsApp Inc. in California. The idea emerged from Koum's discussions with his friend Brian Acton after both had left Yahoo!. Early development was supported by Apple Inc.'s introduction of push notifications in the iOS ecosystem. A pivotal investment of about US$250,000 from former Yahoo! colleagues through Sequoia Capital in 2011 enabled significant expansion. The service's user base grew exponentially, surpassing Facebook Messenger in many markets, which led to its landmark acquisition by Mark Zuckerberg's Facebook in February 2014. Following this, the founders initially remained but eventually departed, with Acton leaving in 2017 and Koum in 2018, after reported disagreements over data privacy and monetization strategies with the leadership of Meta Platforms.

Features

Core functionality centers on text messaging, sharing of images, documents, user location, and media files. It introduced Voice over IP calling in 2015, followed by video telephony in 2016, directly competing with services like Skype and Apple FaceTime. The platform supports creation of group chats, broadcast lists, and status updates. A significant evolution was the 2018 global rollout of WhatsApp Business, a separate application tailored for small enterprises, and the later introduction of payment features in markets like India through integration with the Unified Payments Interface. The service also provides end-to-end encryption by default for all communications, a feature developed in partnership with Open Whisper Systems.

Technology and security

The application operates on a customized version of the Extensible Messaging and Presence Protocol and uses Telephone numbers as identifiers. Its most critical security feature is the implementation of the Signal Protocol to provide end-to-end encryption for all chats and calls, ensuring that only the communicating users can read the messages. This encryption was formally audited and recognized by organizations like the Electronic Frontier Foundation. The service relies on a client-server architecture where messages are stored on company servers only transiently until delivery. It has faced scrutiny from governments, including the Federal Bureau of Investigation, regarding its encryption design, and has been part of legal disputes, such as those involving the United States Department of Justice.

Business model and monetization

Originally, the service adopted a subscription model, charging users US$0.99 per year after the first free year. This model was completely abandoned in 2016 in favor of a fully free service, shifting the monetization strategy towards business-to-business services. Revenue is now primarily generated through WhatsApp Business and its API for larger companies, enabling communication with customers on platforms like Facebook Shops and Instagram Shopping. The development of in-app payment systems, such as WhatsApp Pay in India and Brazil, represents a strategic move into the financial technology sector, competing with established players like Google Pay and Paytm.

Impact and reception

The application has had a profound societal impact, becoming a primary communication tool in over 180 countries and amassing over two billion monthly active users. It has significantly reduced reliance on SMS and altered telecommunication revenue models for carriers like Vodafone and Verizon Communications. In regions like Latin America and South Asia, it is deeply integrated into daily life, commerce, and even political campaigning, as seen in elections in Brazil and India. However, it has been criticized for facilitating the spread of misinformation, leading to real-world violence in incidents like the 2018 Indian lynchings, prompting responses from entities like the World Health Organization during the COVID-19 pandemic.

Legal and regulatory issues

The platform has encountered significant legal challenges worldwide concerning data privacy, encryption, and market dominance. A major fine of €225 million was imposed by the Data Protection Commission of Ireland in 2021 for transparency failures under the General Data Protection Regulation. In India, the service has been involved in ongoing litigation with the Government of India over its 2021 privacy policy update. Authorities in multiple countries, including the United Kingdom through its Online Safety Act, and Brazil via judicial orders, have periodically sought access to encrypted data or threatened bans, citing national security concerns. Its parent company, Meta Platforms, also faces antitrust investigations from bodies like the European Commission regarding the integration of WhatsApp Business with other Meta services.

Category:Instant messaging Category:Meta Platforms