SlicingDice co-founder here.
There is a more in-depth overview about S1Search on this post below:
https://blog.slicingdice.com/slicingdice-uncovered-part-3-s1...
If anyone is interested to know more about our reasons for building S1Search or SlicingDice, this blog post below is a good one:
Why we built SlicingDice:
https://blog.slicingdice.com/why-we-built-slicingdice-1beffc....
Happy to answer any questions about the service or infrastructure.