For those of you that are familiar with elasticsearch, but not their SIEM product. Elastic has grown into a wildly powerful SIEM and integrates with tons of apps and services. The ability to create an Elastic Agent integration to a service like DNS Filter would be super simple for your developers to create and would not only drive more sales, but would greatly enhance our service offerings, and threat hunting abilities as an MSSP.
I've been working with Elastic for quiet a while I'm several different capacities and I'm more than willing to assist, should you choose to head down that road.