COS Business Engine is a powerful solution for Open Access (OA) networks that leverages end-to-end automation to simplify complex, multi-provider ecosystems. Designed as a comprehensive BSS/OSS platform, COS Business Engine enables zero-touch provisioning, automated billing, and a self-service marketplace, allowing multiple service providers to offer competitive services directly to customers. This approach maximizes network utilization, boosts take rates, and reduces operational burdens. Business Engine also supports municipalities and communities in retaining control over infrastructure investments, ensuring long-term financial viability and alignment with public interests, while delivering high-quality broadband access through diverse service provider options.