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Organizations migrating from relational databases to Amazon DynamoDB face challenges in redesigning data models and access patterns. Understanding the fundamental differences in query capabilities, data modeling approaches, and application architecture is essential for optimal performance and scalability. A real-world example illustrates the challenges of migrating a social media platform experiencing rapid growth, with complex queries and scalability concerns. The article is the first part of a series exploring how to effectively migrate from SQL to DynamoDB, focusing on analyzing existing database structures and access patterns to prepare for migration.