RELX's tech stack
What does RELX use?
RELX (reedelsevier.com) uses at least 22 tools we can see from public records, including Microsoft 365 for email and documents, Zendesk for customer support, Pendo for analytics and Cloudflare for content delivery. Last checked .
- Industry
- Financial Services
- Size
- 11–50 employees
- Based in
- Amsterdam, United Kingdom
- Founded
- 1993
- Company page
- Tools found
- 22
- Categories
- 9
- Layers
- 5 of 5
- Last checked
- Oct 2026
RELX's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
1 tool, where the bytes are served from
CDN & Edge
Application
1 tool, what the product is built with
Data & Observability
1 tool, what they measure and store
Analytics
Go-to-market
1 tool, how they find and keep customers
Support & Docs
Company Ops
18 tools, what the team runs on day to day
Email Delivery
Workspace
Dev Tools
Security & Compliance
RELX tech stack FAQ
What tools does RELX use?
We've found 22 tools at RELX (reedelsevier.com). Edge & Hosting: Cloudflare. Application: Anthropic. Data & Observability: Pendo. Go-to-market: Zendesk. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 2, 2026.
What email provider does RELX use?
RELX uses Microsoft 365 and Apple Business for email and documents. We found Microsoft 365 through email records and DNS verification records.
What does RELX use for customer support?
RELX uses Zendesk for customer support. We found Zendesk through email records.
What analytics tools does RELX use?
RELX uses Pendo for analytics. We found Pendo through DNS verification records.
Does RELX use Microsoft 365?
Yes. We found Microsoft 365 at RELX through email records and DNS verification records. Microsoft 365 is used by 245,233 companies we track.
How does runsonwhat know what RELX uses?
We read public traces only: RELX's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.