End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
http://jozve.farafile.ir/file/24316/پاورپوینت-مباحث-پیشرفته-در-مدیریت-ریسک-(فصل-5-کتاب-جورج-ای-رجدا)