# Oracle Cloud Isolated Region (OC1-OC4) > Oracle Cloud Isolated Regions (OC1-OC4) are specialized cloud environments designed to meet the stringent security and compliance requirements of the United States Intelligence Community and Department of Defense. These regions are physically and logically air-gapped from the public internet and other Oracle networks to support classified workloads up to Top Secret levels. - URL: https://optimly.ai/brand/oracle-cloud-isolated-region-oc1-oc4 - Slug: oracle-cloud-isolated-region-oc1-oc4