Analytics & BI · Data & Analytics
Should you build or buy Observability Platform?
An observability platform collects, indexes, and visualizes telemetry data — metrics, logs, and distributed traces — from software systems and infrastructure, giving engineering and operations teams the visibility to debug incidents, understand system behavior, and maintain reliability. Modern platforms ingest OpenTelemetry-standard data and provide dashboards, alerting, and root-cause analysis across the full application stack.
The build-vs-buy decision for Observability Platform turns on how quickly AI workloads are inflating your telemetry volume and whether the OpenTelemetry standard has reduced switching costs enough to make managed platforms optional; with incumbent pricing rising steeply and OSS alternatives maturing, the economics are actively shifting.
Build it, buy it, or bridge?
When building makes sense
AI workloads generate telemetry at volumes that make per-host and per-metric pricing structurally uncomfortable. Grafana's 2025 survey found 76 percent of respondents use open-source observability licensing, and 67 percent run Prometheus in production. The OpenTelemetry standard has commoditized instrumentation across vendors, so the switching cost has dropped to near zero. Self-hosting the Grafana LGTM stack — Loki for logs, Grafana for dashboards, Tempo for traces, Mimir for metrics — is a documented production path that engineering blogs describe as normal for mature platform teams, not a hobbyist experiment. OpenObserve claims 60 to 90 percent cost savings, and independent testing has put Grafana at roughly one-tenth of Datadog's cost for equivalent workloads. The build case is serious when your telemetry volume is large and growing, when bills are increasing faster than infrastructure, and when you have SRE capacity to own the stack.
When buying makes sense
Buying earns its keep when your engineering team wants observability to simply work and not become a project. Dynatrace, Datadog, and New Relic bundle distributed tracing, AI-assisted anomaly detection, service dependency maps, and incident response workflows into products that deploy in hours, not weeks. During an active incident, polished UX that narrows root-cause faster has real business value. The buy case is strongest when platform engineering headcount is limited, when incidents are costly and debugging speed matters, and when the team's preference is a curated, integrated experience over an assembled stack. Grafana Cloud is worth evaluating as a middle path: more cost-efficient than Datadog, less operational overhead than self-hosting, and compatible with OpenTelemetry instrumentation already in place.
The desk read
AI workloads are generating telemetry at volumes that make Datadog and Splunk pricing structurally uncomfortable. The OpenTelemetry standard has commoditized instrumentation, so switching cost has dropped. Grafana Cloud, combined with Prometheus and Loki, is a real option for teams that want managed infrastructure without Datadog's per-host billing model. Self-hosting the full Grafana LGTM stack is also a documented production path, not a hobbyist pattern.
The buy case holds when your engineering team wants observability to simply work and not become a project. Dynatrace and New Relic bundle AI anomaly detection and distributed tracing into products that take days to deploy, not weeks. That operational simplicity has real value when incidents are costly and platform engineering headcount is limited. The build case gets serious when your telemetry volume is large enough that vendor bills are growing faster than your infrastructure, and when you have SRE capacity to own the stack.
Frequently asked
What is an Observability Platform?
An observability platform collects, indexes, and visualizes telemetry data — metrics, logs, and distributed traces — from software systems and infrastructure, giving teams the visibility to debug incidents, understand system behavior, and maintain reliability.
When does building an Observability Platform make sense?
Building makes sense when telemetry volume makes Datadog's per-host billing painful and your team has SRE capacity to operate the OpenTelemetry plus Prometheus plus Grafana stack in production.
When does buying an Observability Platform make sense?
Buying earns its keep when your team wants observability to simply work without becoming a platform project, and when polished AI-assisted incident response justifies the premium.
What are the main Observability Platform vendors?
Representative vendors include Splunk (Cisco), Grafana Cloud, New Relic, Datadog. B4 Pro scores the full set.
What is OpenTelemetry and how does it affect observability decisions?
OpenTelemetry is an open standard for instrumentation that makes telemetry vendor-neutral — the same instrumentation code works with Datadog, Grafana, or any OTel-compatible backend. It has largely eliminated instrumentation lock-in, which means switching observability backends no longer requires re-instrumenting every service.