how would you compare it with solution like logz.io, datadog, and other solution for serverless observability?
is there a way to correlate client side error and server logs?
What type of error logs? You can compare timestamps, but beside that I don't think there's an easy way of doing that, also, some client side errors are not related to the back end in any way.
Desole is more like Sentry or Rollbar than other serverless observability tools, as it is focused only on client side.
You’ll be able to filter events in pinpoint by any attribute, including your custom tags
also, we like using Raygun's concept of marking exceptions as "fixed" per version to quiet it down as we resolve problems, and to highlight regressions if they occur - is this functionality that Desole offers?
At the moment Desole is focused on JS frontend stack traces only, also it doesn't have marking/flagging functionality (unless you send that as a tag from your app). So I don't think you can use it as an out-of-the-box solution, but if you want to work on that feel free to contribute to Desole and add additional functionalities. We'll do our best to help.