Answer: Move assets to S3 Intelligent-Tiering after 30 days., Configure an S3 Lifecycle policy to clean up incomplete multipart uploads.

## Explanation **Correct Answers:** A and B **Detailed Analysis:** 1. **A. Move assets to S3 Intelligent-Tiering after 30 days.** - This is the optimal solution because: - The requirement states that after 30 days, access patterns for each object will be "inconsistent" - meaning some objects may be accessed more frequently than others. - S3 Intelligent-Tiering automatically moves objects between frequent and infrequent access tiers based on changing access patterns. - It maintains high availability (99.9% availability SLA) and resiliency (99.999999999% durability). - It's cost-effective for unpredictable access patterns. 2. **B. Configure an S3 Lifecycle policy to clean up incomplete multipart uploads.** - This is important because: - The company uses multipart uploads for large assets. - Incomplete multipart uploads can accumulate and incur storage costs. - S3 Lifecycle policies can automatically clean up incomplete multipart uploads after a specified number of days. - This helps optimize storage costs. **Why other options are incorrect:** - **C. Configure an S3 Lifecycle policy to clean up expired object delete markers.** - This is not relevant to the scenario. Delete markers are related to versioned buckets when objects are deleted, but the scenario doesn't mention versioning. - **D. Move assets to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days.** - While this would reduce costs, it's not optimal because: - S3 Standard-IA has minimum storage duration charges and retrieval fees. - If objects are accessed inconsistently (some might be accessed frequently), the retrieval fees could be high. - S3 Intelligent-Tiering is better for unpredictable access patterns. - **E. Move assets to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 30 days.** - This is incorrect because: - S3 One Zone-IA stores data in only one Availability Zone, which doesn't meet the "high availability and resiliency" requirement. - It has lower availability (99.5% vs 99.9% for Standard-IA/Intelligent-Tiering). - It's less resilient to AZ failures. **Key AWS Concepts:** - **S3 Intelligent-Tiering:** Ideal for data with unknown, changing, or unpredictable access patterns. - **S3 Lifecycle policies:** Automate moving objects between storage classes and cleaning up incomplete multipart uploads. - **Multipart upload cleanup:** Important for cost optimization when using multipart uploads for large objects.

Author: LeetQuiz Editorial Team