The ability to monitor all of our servers from one location, it's easy for me as an admin or server owner/operator (as I am) because its web-based so no need install anything locally! It also has some nice graphing tools which helps with troubleshooting issues when they occur in real time rather than after hours / days etc have passed - this makes fixing problems much faster too!! None really but if you are looking at something similar then just try both out before making your choice. We're using muninn internally across several sites within my organisation including development environments & staging systems where we use Jenkins CI builds regularly along side other services like AWS CloudWatch Logs service + ELK stack logging infrastructure via Elasticsearch.
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