4.2. Migration and Transfer Strategies
š” First Principle: Effective migration and transfer strategies ensure the efficient and secure movement of data and applications to AWS, minimizing disruption and downtime while maintaining business continuity.
This section delves into the practical application of various migration approaches and tools. We will explore key concepts such as:
- Database Migration: Moving relational and NoSQL databases using services like AWS Database Migration Service (DMS).
- Large-Scale Data Transfer: Handling petabyte-scale data with AWS Snow Family or AWS Direct Connect.
- Application Migration: Rehosting, replatforming, or refactoring applications using tools like AWS Application Migration Service (MGN).
Understanding these strategies requires not just memorization, but the ability to comprehend, apply, and analyze the best fit for diverse scenarios, aligning with the SAA-C03 exam's cognitive demands.
Scenario: A company has a large on-premises data center with various applications and databases that they want to migrate to AWS. They need to choose the most efficient and secure way to transfer their data and applications.
Visual: AWS Migration & Transfer Strategies
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Key Trade-Offs:
- Automation (DMS, MGN) vs. Manual Migration: Automated migration services reduce complexity and downtime but might require specific prerequisites. Manual migration offers full control but is time-consuming and error-prone.
Reflection Question: What are the key factors (e.g., data volume, network bandwidth, downtime tolerance, application type) that influence your choice of migration strategy (e.g., database migration vs. server migration, online vs. offline data transfer) when moving workloads to AWS?