How can I reduce costs for S3 "EUC1-Requests-Tier2" requests?

Question

Hi,

I've noticed a significant change in S3 expenses, in cost explorer, specifically costs associated with **EUC1-Requests-Tier2**.
So, I'm curious if there are effective methods to further reduce expenses on Amazon S3 for **EUC1-Requests-Tier2**.

Any insights or suggestions would be greatly appreciated. Thanks in advance!

Regards,
RK

ThinkTik · Answer

hello

please see [Understanding your AWS billing and usage reports for Amazon S3](https://docs.aws.amazon.com/AmazonS3/latest/userguide/aws-usage-report-understand.html) and [Amazon S3 pricing](https://aws.amazon.com/s3/pricing/)

| Usage Type | Description |
| --- | --- |
| region-Requests-Tier1 | The number of PUT, COPY, or POST requests for STANDARD, RRS, and tags, plus LIST requests for all buckets and objects |
| region-Requests-Tier2 | The number of GET and all other non-Tier1 requests |

for `region-Requests-Tier1` 
1. you can reduce costs by reducing the number of file writes, such as merging multiple small files into one large file, and then writing to S3

for `region-Requests-Tier2` 
1. you can reduce costs by reducing the number of file read, such as merging multiple small files into one large file and then read from S3, reading content of the same size in this way will significantly reduce the number of reads.
2.  Try to use local cache for reading the same object as much as possible,for example [Mountpoint for Amazon S3 optimizes for repeated data access](https://aws.amazon.com/about-aws/whats-new/2023/11/mountpoint-amazon-s3-optimizes-repeated-data-access/)

Usage Type	Description
region-Requests-Tier1	The number of PUT, COPY, or POST requests for STANDARD, RRS, and tags, plus LIST requests for all buckets and objects
region-Requests-Tier2	The number of GET and all other non-Tier1 requests

How can I reduce costs for S3 "EUC1-Requests-Tier2" requests?

Relevant content