AWS Cloud9 is now available in Asia Pacific (Sydney), Asia Pacific (Mumbai), Europe (Stockholm), Asia Pacific (Seoul), Europe (London), and Canada (Central) regions. AWS Cloud9 is a cloud-based integrated development environment (IDE) that lets you write, run, and debug your code with just a browser.  

from Recent Announcements: https://aws.amazon.com/about-aws/whats-new/2019/12/aws-cloud9-available-6-more-regions/