As office 365 is enough flexible for Clients, Means you can use plan according to you needs?It can be simple but you can choose Office 365 advisor tool to get most appropriate/recommended plan for your organization.
Simple save your money by choosing right plan for your organization/your needs
Where and how you can use this toolSimple Click Below
Advisortool (Get your Right Plan)
You will find link at Right bottom of the page, just Click on it’s, another popup screen will Open there,
Fill out proper information and at end you will get recommended plan, you can also download pdf Document with Recommendations
You can find more details for each plan and its comparison with other plans at link below
Office365 plan comparison