Amazon OA is a crucial step in the hiring process for SDE-1 candidates. It evaluates coding skills and problem-solving abilities.To excel in Amazon's OA, focus on data structures, algorithms, and Amazon's leadership principles.Time management is essential during the OA. Prioritize easier questions first and practice within time limits.Use platforms like LeetCode and HackerRank for coding practice. Engage with others who have cleared OAs for tips and strategies.