Developed and enhanced CDN auto-detection for LLMO onboarding within the adobe/spacecat-shared and adobe/spacecat-api-service repositories, focusing on broadening BYOCDN support and improving onboarding reliability. Introduced a two-phase DNS-based detection module that persists detected CDN providers on the Site model, aligns schema validation with CDN_TYPES, and extends token validation using Joi. Addressed a misclassification bug by updating the DNS/IP allowlist and refining detection logic. Leveraged JavaScript and YAML for backend and API development, integrating extensive unit testing and OpenAPI documentation updates. These efforts reduced misconfiguration tickets and strengthened data contracts across shared and API service ecosystems through robust validation.