Safety of your data with G Suite created for Business is very good. Your data on the Google Cloud is yours, and is backed up in multiple data centers to make sure it is always available to you and backed up. Google uses SSL and therefore a VPN is not necessary.

In order to assure its standards to the public Google has ISO 270001 Certification. It also goes through annual SAS 70 Type II audits and SSAE 16 / ISAE 3402 yearly audits. 

In Google's Google Apps Service Level Agreement it promises 99.9% up-time to its Business Apps Users.

Regarding Certification & data privacy, Google does its best to protect its customers. More information can be obtained at Certification & data privacy

Here are Google's five guiding privacy principles:

         

Google has very stringent security policies for its data centers. It keeps them very private not allowing any public tours, and only allowing employees with very strict access.

Here is an excellent video showing you security at Google data centers.

Five very simple tips to help you and your computer stay safe on the Internet