Your team must decide whether to refactor an aging microservice or replace it with a new architecture. How would you evaluate trade‑offs, prioritize options, and recommend a course of action?

Use RICE scoring: 1) List options (refactor vs replace). 2) Define criteria: Reach, Impact, Confidence, Effort. 3) Score each option on a 1‑10 scale. 4) Compute RICE score = (Reach × Impact × Confidence) / Effort. 5) Compare scores, identify highest‑value option. 6) Draft recommendation, outline risks, mitigation, and next steps. 7) Present to stakeholders, gather feedback, iterate if needed. 8) Finalize decision and document rationale.

I would first enumerate the options—refactor the existing microservice or replace it with a new architecture. Next, I would apply the RICE framework: Reach (how many users or services are affected), Impact (potential performance or reliability gains), Confidence (data‑driven certainty of estimates), and Effort (time, resources, risk). I would score each dimension on a 1‑10 scale, calculate the RICE score, and compare the results. The highest‑scoring option would become the recommendation. I would then draft a risk mitigation plan, outline a phased implementation roadmap, and present the decision to stakeholders, ensuring alignment and transparency. Finally, I would document the rationale and metrics for future reference.