This chapter provides a concise summary of the key steps undertaken throughout the book to achieve the overarching objective: the development of a high-performance, radiation-tolerant analog-to-digital converter (ADC). It traces the design flow from initial architectural exploration to radiation-aware circuit implementation and verification. Special emphasis is placed on the research contributions, including a novel hardening methodology that integrates layout-level techniques with system-level redundancy, and an innovative calibration scheme that enhances robustness under radiation-induced degradation. These advancements distinguish the proposed ADC from conventional designs in both performance and resilience. Finally, the chapter outlines potential directions for future research, such as reducing power and area overhead, implementing adaptive radiation monitoring, and extending the design framework to support emerging process technologies. These suggestions aim to inspire continued progress in the field of radiation-hardened mixed-signal design.