Operations | Monitoring | ITSM | DevOps | Cloud

A practical comparison of the best observability tools in 2026: Last9, Datadog, Grafana Cloud, New Relic, Dynatrace, Honeycomb, Coralogix and SigNoz. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

An error budget is the unreliability an SLO allows. Learn to calculate it, track burn rate, set multiwindow alerts in PromQL and write an error budget policy. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Grafana Cloud pricing broken down: free tier limits, Pro rates for metrics, logs and traces, how active series and DPM are billed, and worked cost examples. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

How to monitor a Rails application in production: reading Puma's stats endpoint, spotting GC pressure, and finding the query that's actually slow. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

SRE automation covers four different jobs: runbook automation, self-healing infrastructure, drift detection, and resilience testing. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

AI agent observability means tracing tool calls, reasoning steps, and handoffs, not just tokens and latency. Here's what to instrument and why. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

How to monitor a PHP application in production: reading the PHP-FPM status page, checking OPcache health, and finding the request that is actually slow. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

AIOps explained in plain terms: what it means, how it differs from AI-SRE and MLOps, how it detects problems, and whether a small team needs it. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Eight LLM and AI agent observability platforms compared: what each tracks, pricing and free tiers, self-hosting options, and who each is built for. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

If you are able to build it better than your vendor, then change your vendor. Not build it. Rishi builds large-scale observability systems at Last9, focusing on reliable and cost-efficient telemetry infrastructure, and writes about the practical lessons learned while operating ClickHouse, VictoriaMetrics, and OpenTelemetry in production.