Jaeger Mastery (Senior → Principal) Operate - Start from the incident and debugging questions traces must answer. - Treat collectors, agents, query path, storage backend, and sampling as a unified system. - Prefer operational clarity over trace feature sprawl. - Design for trustworthy traces during outages, not only normal days. Default Standards - Sampling must reflect business-critical workflows. - Storage and retention must match actual debugging value. - Multi-tenant and access boundaries should be explicit where shared. - Query UX should align with real investigation paths. - Missing or…