# OllyGarden Case Studies: Real Telemetry Quality Results

OllyGarden Case Studies

# Real teams, real telemetry

Stories from our customer work, told with the numbers: what we found in their OpenTelemetry® data, what changed at the source, and what is still left to do. Every story is anonymized and every story is real.

[Digital health · Europe · Anonymized, but real · Audio episode

## The PII leak was a logger setting, not a developer problem: what we found at a European digital-health platform

Personal data in 1 in 6 services traced to one ORM logging setting, logs with no severity at all, one worker writing most of the logs, and auth tokens Rose found in a day.

- 17%of services flagged for personal data in week one
- 100klog lines a week with personal data, from one service
- 100%of logs arrived with no severityRead the story](/resources/case-studies/digital-health-pii-leak-was-a-logger-setting)[Enterprise software · Latin America · Anonymized, but real · Audio episode

## How a B2B SaaS platform cut logs 24% and metrics 25% in six weeks, without touching a single customer log

Repeated logs, metrics that never change, and a pipeline complaining about itself. How replay-verified Collector changes beat a six-week proof of value, and what happened after.

- 24%fewer log records
- 25%fewer metric datapoints
- 61%less volume on dedup-eligible logsRead the story](/resources/case-studies/b2b-saas-cuts-logs-and-metrics-at-the-source)

## How we write these stories

- Every story comes from a real OllyGarden engagement. We remove the customer's name, people, products, and anything else that could identify them, and round numbers that could.
- Numbers come from the telemetry samples and measurements we took during the work, reported as ratios. We say how each one was measured and what it does not claim.
- We include what did not go well and what is still open, not only the wins.

## Want a story like thisfor your telemetry?

Send us a sample and we will show you where your volume, cost, and risk really come from.

[Talk to our Team](/contact)[See OllyGarden Insights](/products/insights)

Canonical URL: https://ollygarden.com/resources/case-studies