Is Microsoft Purview right for us?

lmoore 

I will suggest that Purview has a lot of power if your data is primarily on OneDrive and Sharepoint or you plan on moving there.

I've used on-prem based DLP solutions and they add a lot of complexity to DLP and data protection architectures.

Likely you'll always have an on-prem component to any DLP solution but once your data is in the cloud DLP is a very powerful tool that no company should do without.

Licensing is also a big decider.

Once your organization is serious about DLP it can make the difference to move to an E5 license.

If this is a factor then you have to broaden your perspective and understand the big list of security tools you get with E5. The interesting thing about going E5 with a small business is it's likely a simple calculation of cost! eg. $50 x users (per month).