CircleCI vs Datadog: who uses which
Customers, public proof and the companies that use both.
On usedby, 87 companies use CircleCI and 60 use Datadog. 2 companies use both, including Motion and Eventbrite. CircleCI leads among the DevTools & Infrastructure companies on usedby that use either tool, Datadog among the Artificial Intelligence companies.Latest check Nov 13, 2026: 147 of 147 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses CircleCI, Datadog, or both
Every company with a public proof for at least one of the two tools.
85
listed for CircleCI only
2
companies use both
58
listed for Datadog only
On usedby, 85 companies are listed for CircleCI only, 58 are listed for Datadog only and 2 use both, out of the 145 companies listed for at least one. An absent listing does not prove non-use.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, CircleCI | First public proof, Datadog |
|---|---|---|
 Motion | On or before Nov 2026 | On or before Nov 2026 |
 Eventbrite | — | — |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use CircleCI, Datadog or both: a share of the companies on usedby, not of the market.
Listed for CircleCI onlyBothListed for Datadog only
More common with CircleCI
- DevTools & Infrastructure10 of the 13 DevTools & Infrastructure companies on usedby that use either tool use CircleCI.
More common with Datadog
- Artificial Intelligence11 of the 14 Artificial Intelligence companies on usedby that use either tool use Datadog, 1 of them alongside CircleCI.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: CircleCI, 4 of 6; Datadog, 4 of 6. Missing facts remain unverified, not absent features.
CircleCIDatadogWhat customers report
Results as the vendor or the customer published them, with the source and the date.
CircleCI
They now spend less than 10 minutes per week on DevOps management.
Tunaiku
Vendor case study, circleci.com, published Nov 13, 2026
Since using CircleCI, Travelex has been able to save roughly £300,000 in the last five years.
Travelex
Vendor case study, circleci.com, published Nov 13, 2026
Datadog
reduce global mean time to resolution (MTTR) from 11 hours to less than one hour, an improvement of approximately 90%
Bullla
Vendor case study, datadoghq.com, published Oct 21, 2026
those metrics are available to all 2,300 SNCF engineers and administrators, across all teams and environments
SNCF
Vendor case study, datadoghq.com, published Sep 8, 2021
Questions about CircleCI and Datadog
Which is used more, CircleCI or Datadog?
CircleCI has more customers on usedby: 87 against 60 for Datadog. CircleCI leads among the DevTools & Infrastructure companies on usedby that use either tool, Datadog among the Artificial Intelligence companies.
Do companies use both CircleCI and Datadog?
Yes. 2 companies use both on usedby, including Motion and Eventbrite.
Who uses CircleCI?
87 companies on usedby, each with the public page that shows it. See who uses CircleCI.
Who uses Datadog?
60 companies on usedby, each with the public page that shows it. See who uses Datadog.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.