The 'All-in-One' observability platform. It excels at correlating infrastructure spikes with application errors. However, its pricing model punishes you for logging too much data, and the per-seat pricing makes it expensive to give access to your entire engineering team.

Amazon's zero-config APM. It uses a compliant OpenTelemetry agent to auto-discover services and track performance. While setup is instant, it locks your data into the expensive CloudWatch ecosystem, where costs can explode for high-traffic microservices.