Which is better: Grafana or Splunk?

Whether Grafana or Splunk is better depends on the use case. Grafana is a perfect match for real-time visualization and monitoring, utilizing interactive visualizations with supported data sources like Prometheus and Elasticsearch. This openness of source makes it economically friendly and highly customizable by teams requiring flexible visualization. Splunk is an end-to-end data analysis and log management platform. Ideal for enterprise-level monitoring, it has powerful search, alerting, and machine learning for large-scale IT operations. Grafana focuses more on visualization, Splunk goes deep into indexing and analyzing the data. In other words, Grafana would be a good fit if one wants to cater to the visualization requirements, whereas Splunk would come into play when the requirement for deeper data analysis arises.