WhatsApp is a popular messaging and voice calling app that allows users to send text messages, make voice and video calls, share photos, videos, documents, and location. It was founded in 2009 by Jan Koum and Brian Acton, former employees of Yahoo!. The app gained immense popularity due to its simple and user-friendly interface and the ability to send messages using internet data, making it cost-effective for users.

WhatsApp is based in Menlo Park, California, United States. In 2014, Facebook acquired WhatsApp for $19 billion, making it one of the biggest acquisitions in the tech industry. The acquisition allowed WhatsApp to leverage Facebook's resources and infrastructure while maintaining its independence.

WhatsApp's main products and services include the messaging app for smartphones and web browsers, allowing users to conveniently communicate with their contacts. It offers end-to-end encryption, ensuring the privacy and security of messages. The app also supports voice and video calls, making it a versatile communication tool.

With over 2 billion monthly active users, WhatsApp operates on a global scale. It is available in over 180 countries and supports more than 60 languages. The app has become particularly popular in emerging markets where affordable internet access is limited.

WhatsApp has also introduced various features tailored to specific markets, such as WhatsApp Business for small businesses to connect with customers. WhatsApp maintains its independence under Facebook but collaborates with its parent company on various initiatives. It has also partnered with organizations such as the World Health Organization to provide reliable information during the COVID-19 pandemic.

In terms of market position, WhatsApp is one of the dominant players in the messaging app industry. It competes with other messaging apps such as WeChat, Line, Telegram, and Snapchat. However, WhatsApp's user base and broad international reach give it a competitive edge.

In recent years, WhatsApp has introduced features like WhatsApp Payments, allowing users to send money to friends and family, further expanding its offerings. Additionally, the company has faced challenges in some countries regarding privacy concerns and misinformation spreading on the platform. To address these issues, WhatsApp has taken steps to limit message forwarding and implement stricter privacy policies.

As of the latest updates, WhatsApp continues to be a leading messaging app with a strong user base. It continues to innovate and improve its features to meet the evolving needs of its users