Ask HN: Do you log your customer activity data?

Do you log your customer activity to any of the log management platforms, like Splunk, Datadog, Papertrail, Sentry, etc?

We do, and most of that data is focused on errors (eg., already registered, bad credit card, etc), although we do about 30% of events like "quote requested", clicked "sign up", etc).

We ended up creating a "sidecar", that processes the event, checks again our CRM in place (Hubspot, Zoho) and either proactively initiates a conversation via email, or sends transaction confirmation/error. (We store templates for different events, and adjusted to different channel - depending which one we know for the customer - like Push, SMS, email).

Would you use something like that?

If not, why not?