MongoDB

“For a few years now our company has been replacing some very expensive Oracle DB's with much less expensive and lightweight combination of MongoDB with Elastic Search assisted collections.”

“There is little negative impact in using MongoDB in terms of ROI, as it comes with reasonable pricing policies.”

“Mongo doesn't cost us much to use, so we have no reason to assess the cost.”

“In MongoDB you can query the single document and also fetch the data of all key value pairs and also its nested key value pairs directly.”

“Servers cost money - so DR & HR doesn't come for free (even though it's built into the architecture of MongoDB.”

“Very good ROI due to free software A lot of support from the community.”

“This is pretty cost-effective and with a single license multiple users can log in to it.

If any latest version is launched then the upgrade happens automatically without hampering the API's...”

“It's more expensive than many databases that could be used where performance isn't a critical issue or long-term persistence is desired (e.g., compared with Datastore/Firestore/Dynamo/etc.), while it... … If it has cost us in terms of ROI, it would be in some of the complexity that's been involved in joining different pieces of data across collections, but that's been somewhat mitigated with GraphQL.”

“Much cheaper than SQL Server Low overhead cost, i.e., setup/config/admin.”

“In case if you have less budget, go for this tool as it's free.”

“It is a completely free of cost software; it contains high security.”