Google and Facebook announced a partnership that will bring Google Drive integration to WhatsApp for Android, allowing you to automatically backup all your chat messages and multimedia content regularly to the cloud. Google says that Google Drive includes so everything stored in the cloud will be encrypted, preventing anyone to snoop into your conversations. The company also adds that the new backup feature allows users to restore their WhatsApp content if they move to a new mobile device. Backup and Recovery with Encryption is also possible with encryption, Google says.
Source: https://thehackernews.com/2015/10/auto-backup-whatsapp-data.html