After having used Datadog for several years, going back to Grafana / Loki / Prometheus felt like regressing by two decades. As much as I appreciate free solutions, I feel like Grafana has really fallen behind when it comes to developer experience
Grafana cloud is better for querying logs.
Grafana cloud is probably a bit better for querying metrics. Grafana cloud is terrible at finding traces or even loading them. Datadog is lightyears ahead. For alerting I feel datadog has better features but is overwhelming with all the different options.
grafana is very quirky for searching for traces. And has a huge learning curve.
Could you provide more details? Although I've never had the opportunity to use Datadog at any of my previous positions, I am quite familiar with Grafana and I'm generally pretty happy with it.