We present a method to quantitatively evaluate the overall trust of space-based services as related to the core cybersecurity principles of confidentiality, availability, and integrity. This method considers both qualitative and quantitative assessments generated through phases categorized as Compliance Assessment, Performance of day to day cybersecurity operations cyber-hygiene, and Incident Response. The inputs of these phases are used to generate a quantitative metric that indicates an organizations ability to securely deliver data and services. This metric is referred to as the Architecture Score Index. Preprint to 34th Annual Small Satellite Conference.