We have seen a return on investment.

We have experienced an ROI after three to four years. 

Our company achieved ROI by using the solution. 

In our business, everything is done by email applications, Microsoft Excel, and Microsoft Word. So, we get a 60% ROI on the solution.

We've seen an ROI. When we were on-premises we had much more trouble. The cloud makes it much better. We're saving a bit more money.

We have seen a return on investment since we are taking advantage of the license and Microsoft Exchange Online's useful features.

We see a whole lot of return on investment.

The return on investment is very good. I would rate it a five out of five in this regard. 

Currently as a Microsoft Partner we do not pay for an E3 license of O365 which includes Exchange Online. As for customers they are billed directly from Microsoft.

As a partner of record on each customer Microsoft pays out residuals as long as the customer continues to pay for the service.

If you are not a partner the ROI is based on the fact that you no longer need to pay for hardware/software, hardware/software maintenance, and labor to perform upgrades, maintenance, and troubleshooting of hardware/software.

We have seen a return on investment from Exchange Online.

This solution really does save us a lot of time. And, we saved a significant amount of money by using this service. 

We worked out the investment was a worthwhile investment that saved itself in about eight months. The investment in the project to get it across would pay for itself by reducing the on-premise Exchange costs. There is a definite return on investment by using this solution.