Using Cloud Storage to migrate attachments in Jira CSV import
Platform Notice: Cloud - This article applies to Atlassian products on the cloud platform.
Summary
When migrating from another issue tracker, you can export data to a comma-separated value (CSV) file and then import that file into your Jira Cloud applications. CSV files are text files representing tabulated data and are supported by most applications that handle tabulated data. You can also attach files to issues created from your CSV file. For detailed information, see Importing attachments section on Import data from a CSV file.
Sometimes, you can't make your attachment storage publically accessible due to security reasons.
Environment
Jira Cloud
Solution
If it is not possible to make the attachments public, you can use cloud storage like Amazon S3 to migrate the attachments.
If you are proceeding with Amazon S3 storage, you need to create an S3 bucket, upload the attachments in it, and use those attachment URLs in the CSV file to add them to the issues.
Step 1: Create your first S3 bucket
Step 2: Upload an object to your bucket