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AWS Certified Solutions Architect - Associate Exam Question Walkthrough: Data Transfer Costs
Understand how to tackle high AWS data transfer costs with this question walkthrough for the SAA-C03 exam.
High AWS data transfer costs can trip up candidates. Many overlook the impact of region choices on their bills. In this post, we break down a key question on optimizing costs.
The question
An organization is analyzing their AWS bill and notices high costs related to data transfer. They use multiple regions for redundancy. What strategy should they implement to lower these costs?
A. Use Amazon CloudFront to cache content globally
B. Consolidate resources into fewer regions
C. Utilize VPC Peering for inter-region traffic
D. Enable AWS Global Accelerator for routing
Think before you scroll
Before making a choice, consider how data transfer charges work between AWS regions. Each option presents a different approach to managing costs. Weigh the potential impact of each strategy on your overall expenses.
The answer
The correct option is B: Consolidate resources into fewer regions. This approach directly reduces inter-region data transfer costs, which are incurred when data moves between AWS regions. By minimizing the number of regions used, the organization can cut these charges significantly.
Why the other options lose
A: Use Amazon CloudFront to cache content globally - While CloudFront can reduce latency and improve performance by caching content, it does not address the issue of high inter-region data transfer costs. It helps with content delivery but not with the fundamental cost structure.
C: Utilize VPC Peering for inter-region traffic - VPC Peering allows for network connectivity between VPCs in different regions. However, it does not eliminate the costs associated with transferring data between these regions. Thus, it doesn't solve the primary issue of high data transfer bills.
D: Enable AWS Global Accelerator for routing - AWS Global Accelerator optimizes the routing of traffic to applications but does not inherently reduce data transfer costs. It focuses on improving performance and availability rather than on cost savings.
The concept behind it
The underlying principle here is cost optimization through architectural decisions. Data transfer fees can accumulate quickly when resources are spread across multiple regions. By consolidating resources, you reduce the amount of data transferred between regions, leading to lower costs. This principle applies to various scenarios, not just AWS, emphasizing the importance of strategic planning in cloud architecture.
Exam trap to remember
Remember the two-question rule: always assess how changes in architecture can impact costs. Consolidation is often the best defense against unexpected bills.