
Background verification : marriage
Given the chaos in today's marriage market I think it's very important to not leave things on chance Has anyone done a background verification on someone from marriage pov ? I Need to collect some feedback on the process. Are there some reliable services ?

Background verification is useless. There is no way to check if the verification done is real or not.
The best way to get married to to prefer someone whose family is known. Behavior of the parents is a good way to estimate their wards behavior. If that is not viable/ all choices are exhausted - The next best option for a man is to marry a girl who father is in your field of work. And reverse for the woman - Marry the guy who is in the same profession as the brides's father.
If that's not possible, then only way is to evaluate expectations. Any bride/groom whose family comes with "we are better than this" attitude run. Their expectations must match with their income standards.
Every man must have his expectations match his income . Every woman must match her expectations based on her age.

Last two lines, differs from individual to individual
But above that it has been really thought through! Great answer!

Background verification works in some cases and doesn't in some case.
The chances of working it is better if prospect is in circle
Best way is make sure about prospect (both sides) and then do engagement.
After engagement attend each other's family function and in between see how you are comfortable with each other
What kind of details do you want to verify?
Another thought, maybe isliye earlier people preferred marriage in their own communities so that kahin se jaan pehchan nikal aaye