ADOPTERS.md: Add Facets.cloud to the list

Fixes: #6640

Signed-off-by: Ashutosh Narkar <anarkar4387@gmail.com>

ADOPTERS.md

@@ -83,6 +83,11 @@ production users that have added themselves (in alphabetical order):
 * [Elastic](https://www.elastic.co/) uses OPA in its Cloud Security offering to enable CSPM and KSPM solutions, helping customers adhere to best practices
   defined in CIS benchmarks by tracking misconfigurations on AWS, GCP and Azure. the code is Open Source, see [Security Policies](https://github.com/elastic/cloudbeat/tree/main/security-policies).
 
+* [Facets.cloud](https://www.facets.cloud/) is a DevOps platform designed to streamline software development and deployment processes.
+  The integration of Open Policy Agent (OPA) has been a key factor in developing our [Guardrails Policy](https://readme.facets.cloud/docs/guardrail-policy) feature.
+  Managed using OPA, this feature enables our customers to set rules that align their software blueprints(detailed architectural designs of their software) - with established standards.
+  The Guardrails Policy feature has optimized resource management, minimized redundancy in policy definitions, and ensured comprehensive adherence to organizations’ best practices.
+
 * [Fugue](https://fugue.co) is a cloud security SaaS that uses OPA to
   classify compliance violations and security risks in AWS and Azure
   accounts and generate compliance reports and notifications.