Who is using Apache Celeborn?

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/incubator-celeborn/issues) and found nothing similar.

### Motivation

## Who's using Apache Celeborn?

The Apache Celeborn community grows with the combined efforts of every user and developer and appreciates every user and developer who uses and cares about Celeborn. We are committed to listening to each one of you to make the community more prosperous.

Therefore, the purpose of this topic is to encourage you, as a user or developer, to leave your real-world scenarios so that we can subsequently explore new and better solutions, schedule the releases, and solve real-world problems based on these scenarios.

We look forward to your comments in the comments space, including but not limited to the following areas.

- Organization: e.g. Alibaba Corp.
- Region: e.g. Hangzhou, China
- Contact: e.g. zhouky@apache.org
- Usage Scenario: e.g., we use Apache Celeborn to improve the efficiency and elasticity of different map-reduce engines and provides an elastic, high-efficient management service for intermediate data including shuffle data, spilled data, result data, etc.

Regards,

Apache Celeborn Community

### Solution

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

No files, tests, or entry points are named. Read the issue and its 43-comment discussion first; the requested outcome is collecting user organizations, regions, contacts, and usage scenarios, with no code change or completion criteria defined.

Written by the indexing model from the issue text.