# What does CareFirst BlueCross BlueShield use?

CareFirst BlueCross BlueShield (carefirst.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-10).

- Industry: Managed Care

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain |  |
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |
| [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Custom domain |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Salesforce Marketing Cloud](https://www.runsonwhat.com/reverse/sfmc) | Marketing | DNS verification records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records |  |
| [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records |  |
| [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) | Security & Compliance | DNS verification records |  |
| [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records |  |
| [Foxit](https://www.runsonwhat.com/reverse/foxit) | Collaboration | DNS verification records |  |
| [HashiCorp Cloud](https://www.runsonwhat.com/reverse/hashicorp) | Dev Tools | DNS verification records |  |

## FAQ

### What tools does CareFirst BlueCross BlueShield use?

As of October 2026, runsonwhat has found 14 tools at CareFirst BlueCross BlueShield (carefirst.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Microsoft Azure. Go-to-market: Salesforce Marketing Cloud. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 10, 2026.

### What cloud does CareFirst BlueCross BlueShield run on?

CareFirst BlueCross BlueShield uses Amazon Web Services for hosting and cloud infrastructure, alongside Microsoft Azure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 144,869 companies runsonwhat tracks.

### What email provider does CareFirst BlueCross BlueShield use?

CareFirst BlueCross BlueShield uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 701,701 companies runsonwhat tracks.

### What marketing software does CareFirst BlueCross BlueShield use?

CareFirst BlueCross BlueShield uses Salesforce Marketing Cloud for marketing, according to runsonwhat (October 2026). runsonwhat found Salesforce Marketing Cloud through a DNS verification record for Salesforce Marketing Cloud. Salesforce Marketing Cloud is used by 5,288 companies runsonwhat tracks.

### Does CareFirst BlueCross BlueShield use SendGrid?

Yes. runsonwhat found SendGrid at CareFirst BlueCross BlueShield through email records that authorize SendGrid. SendGrid is a Email Delivery tool used by 191,077 companies runsonwhat tracks.

### Which companies have a tech stack similar to CareFirst BlueCross BlueShield's?

The companies with the stacks most like CareFirst BlueCross BlueShield's are International Flavors & Fragrances Ltd. (Japan), Dominion Energy, BankUnited and Ncsu Global Wash Cluster, according to runsonwhat (October 2026). Each shares 6 to 8 tools with CareFirst BlueCross BlueShield, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what CareFirst BlueCross BlueShield uses?

runsonwhat reads public records only. Of the 14 tools at CareFirst BlueCross BlueShield, 9 were found through DNS records, 3 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and carefirst.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/carefirst.com (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.