Google Apps is the business grade solution for Email, Cloud Storage, Team Collaboration and more.
Google Apps will suit to small companies, startups or individuals. It’s way easier to administer than Office 365 and in most cases you won’t need an IT professional to set up something. Google provides a fabulous business support, so if you’re stuck somewhere you can always give them a call at no extra cost.
Google Apps have its pros and cons compare to Office 365 solution from Microsoft, but the main competitive side here is the cost of subscription $5 for Google Apps for Work against $7 for Office 365 Essentials (similar subscription from Microsoft).