Lexicon · alternatives
Datadog
Datadog is the biggest observability SaaS, with a famously complex bill. Why so many teams search for Datadog alternatives, and how Tsuga compares to it.
Definition
Datadog is the largest SaaS observability platform, spanning infrastructure monitoring, APM, logs, RUM, security, and dozens of adjacent products, collected largely through its proprietary agent and priced per product.
What it means in observability
Datadog is the default incumbent in most observability evaluations and the reference point the rest of the category compares itself against. Its breadth is genuinely unmatched, one vendor covering nearly every monitoring need, which is also why Datadog alternatives is one of the most searched phrases in the space.
How it works in practice
The Datadog agent, deployed across hosts and clusters, feeds the SaaS platform alongside cloud integrations, with each capability, hosts, custom metrics, indexed logs, traces, RUM sessions, metered and billed as its own line.
Where it gets hard
The bill is the story: per host, per GB, per custom metric, and per indexed span pricing interact in ways that are hard to predict, and cost management becomes its own engineering discipline, with sampling and log exclusion as survival tactics. Proprietary agents and query workflows accumulate into classic lock-in, and all telemetry resides in Datadog's cloud, egress meter running.
Where Tsuga fits
Tsuga's answer is structural: one flat per GB price, OpenTelemetry native ingestion instead of a proprietary agent, and a BYOC deployment that keeps telemetry in your own account. Full fidelity becomes affordable, so cost engineering stops being part of the observability job.
Related terms
- APMAPM, application performance monitoring, is the practice and product category focused on the health of applications in production: request rates, error rates, latency, and the transaction level detail needed to explain them.
- DynatraceDynatrace is an enterprise observability platform known for its OneAgent automatic instrumentation, the Davis AI engine for root cause analysis, and the Grail data lakehouse, sold on a consumption based pricing model.
- Egress costsEgress costs are the fees cloud providers charge for data leaving their network, priced per gigabyte and varying by destination.
- New RelicNew Relic is one of the original APM vendors, now a broad all in one observability SaaS covering APM, infrastructure, logs, browser monitoring, and more, priced on data ingested plus per user seats.
- SamplingSampling is the practice of keeping only a subset of telemetry, usually traces, so that volume and cost stay manageable.
- SplunkSplunk is the long standing leader in log analytics and SIEM, acquired by Cisco in 2024, offering log search through its SPL query language plus an observability suite spanning metrics and traces.
- Vendor lock-inVendor lock-in is the accumulation of switching costs that makes leaving a platform impractical regardless of how the relationship is going: proprietary instrumentation, captive data, workflows that exist in only one tool, and contracts priced to reward staying.