If you run a small-business and want to save money. Then I can recommend Synology NAS DSM 7 with multi software packages installed. I will guide you how you can get up and running with Synology Drive, Synology Office, Synology Contacts, Synology Photos, Synology Calendar, Synology Chat Server. All the software its free if you own a Synology NAS and running Synology DSM 7.
A business with 10 employee over 5 year there running Google Suit, Dropbox and Slack are using around 15.000$ you can buy a Synology with hard drives for around 3000$ with 5 years warranty.