The solution was selected after a POC with a couple of vendors. Deciding factors were cost and the fit to our use cases. The techno-commercial aspect was the final deciding factor. 

We did look into Micro Focus.

The first difference between the various solutions is how many logs you can export. DNIF had a limitation of up to 2000 or so logs in one go whereas in other solutions you can download millions of logs. The out-of-the-box use cases provided by DNIF were not that great and creating a use case was also a headache. We spent quite a lot of time troubleshooting the reports as a result of inaccuracies. This was all during the initial stages when there were a lot of problems. On the positive side, the DNIF search query was better than other solutions.

There is one more option which has been developed in India and we are also using that. But DNIF is much more mature. The other one is called Khika. It is also good but it is still new to the market. We are still evaluating them and we are using it for smaller deployments. Cost-wise, Khika is cheaper, but feature-wise, DNIF is probably slightly better.

We didn't look at other vendors before choosing this solution. We planned ahead specifically with this solution.