AWS IoT Events is now available in the EU (Frankfurt), Asia Pacific (Sydney) and Asia Pacific (Tokyo) regions. This is in addition to the US East (N. Virginia), US East (Ohio), US West (Oregon), and EU (Ireland) AWS regions.

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/06/aws-iot-events-now-available-frankfurt-sydney-tokyo/