How does the Messenger Platform work? When a person texts your business on Messenger, their message is sent to the Facebook server. The Facebook server then sends webhooks to your business server, where your Messenger App is hosted. Using the Send API, your app can respond to the person on Messenger. In this way, you can construct guided conversations to lead people through an automated flow or build an app to serve as a bridge between your agents and your business presence on Messenger. The Messenger Platform does not require any payment to use. It is meant for businesses to handle inquiries from their customers. Once you build your experience for your customers to interact with, you can then leverage Click-to-Messenger Ads to bring people to your experience.

More than 2 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere. WhatsApp is free and offers simple, secure, reliable messaging and calling, available on phones all over the world. TEXTS Simple, Reliable Messaging Message your friends and family for free*. WhatsApp uses your phone's Internet connection to send messages so you can avoid SMS fees. GROUP CHAT Groups to keep in touch Keep in touch with the groups of people that matter the most, like your family or coworkers. With group chats, you can share messages, photos, and videos with up to 256 people at once. You can also name your group, mute or customize notifications, and more. WHATSAPP VOICE AND VIDEO CALLS Speak Freely With voice calls, you can talk to your friends and family for free*, even if they're in another country. And with free video calls, you can have face-to-face conversations for when voice or text just isn't enough. WhatsApp voice and video calls use your phone's Internet connection, instead of your cell plan's voice minutes, so you don't have to worry about expensive calling charges. WHATSAPP ON WEB AND DESKTOP Keep the Conversation Going With WhatsApp on the web and desktop, you can seamlessly sync all of your chats to your computer so that you can chat on whatever device is most convenient for you. Download the desktop app or visit web.whatsapp.com to get started. END-TO-END ENCRYPTION Security by Default Some of your most personal moments are shared on WhatsApp, which is why we built end-to-end encryption into the latest versions of our app. When end-to-end encrypted, your messages and calls are secured so only you and the person you're communicating with can read or listen to them, and nobody in between, not even WhatsApp. PHOTOS AND VIDEOS Share Moments that Matter Send photos and videos on WhatsApp instantly. You can even capture the moments that matter to you most with a built-in camera. With WhatsApp, photos and videos send quickly even if you're on a slow connection. DOCUMENTS Document Sharing Made Easy Send PDFs, documents, spreadsheets, slideshows and more, without the hassle of email or file sharing apps. You can send documents up to 100 MB, so it's easy to get what you need over to who you want. VOICE MESSAGES Say What's On Your Mind Sometimes, your voice says it all. With just one tap you can record a Voice Message, perfect for a quick hello or a longer story.

Workplace was first announced on January 14, 2015. It launched in beta as Facebook at Work with customers including the Royal Bank of Scotland before officially launching in October 2016. Facebook itself had been using a version of Workplace internally since 2011 when one of its engineers created groups that were only accessible to people inside the company. Alongside Facebook Messenger, these private groups helped Facebook employees work more efficiently together by reducing their reliance on email and other Software as a Service tool. Features: News Feed: The News Feed is a scrolling stream of posts that uses Facebook's machine learning algorithms to keep people up to date with relevant company announcements. Groups: Groups are shared collaboration spaces where people can upload documents, leave comments, manage projects, and get work done with colleagues. Multi-Company Collaboration: Workplace enables people to collaborate with external teams, partners or suppliers from within their Workplace account using secure and private groups, chats, and video calls. Workplace Chat: Workplace Chat is an instant messaging tool that allows text, voice calls or video conferencing with up to 50 colleagues. Live Video: Live Video enables users to broadcast live directly from their mobile devices and receive real-time feedback in the form of comments and reactions. Auto Translate: Auto Translate uses the same machine learning technology that serves up 4.5 billion translations every day on Facebook to provide one-click translations in 46 languages. People Directory: Find colleagues, build connections, and collaborate more effectively with a searchable database of profiles customized to individual organizations.