This case study examines how Wattwatchers, an energy technology company, achieved enterprise-level security through the implementation of DigiCert® ONE. The document outlines Wattwatchers' transition from a consumer-focused startup to serving large enterprises, which introduced new security challenges due to increased scrutiny from potential customers. The company required a scalable solution that could integrate with its existing API-driven architecture while automating critical security tasks such as certificate management and firmware signing. The case study details the specific solutions employed, including DigiCert Device Trust Manager and DigiCert Software Trust Manager, which facilitated automated certificate lifecycle management and ensured only trusted firmware was executed on devices. Additionally, the document highlights the operational efficiencies gained, including significant cost savings and enhanced security posture, enabling Wattwatchers to meet the rigorous demands of enterprise clients. The collaboration with DigiCert also contributed to the company's overall maturity in managing security protocols and practices.