Platform One is the Department of War's enterprise DevSecOps initiative offering secure, compliant, and scalable software factories for mission owners. It seeks commercial software vendors to integrate into regulated, Zero Trust–aligned environments at IL2, IL4, and IL5. Needed capabilities include container security, infrastructure management, DevSecOps tooling, and workflows that support Authorization to Operate (ATO). The initiative is inviting vendors to participate in its Industry Day to explore partnership opportunities. No specific performance location, budget, or submission timeline is indicated in the description.