CloudTempo is currently in beta. This means that it is not available in the Chrome Web Store / Edge Addons or any other official extensions store yet. You can install it, but you will need to do so manually.
Download the latest version of CloudTempo extension (0.2.0)
Unzip the downloaded
Open Chrome and go to
Enable developer mode
Load unpackedand select the unzipped folder
Go to AWS Console and press
CMD + K(on Mac) or
CTRL + K(on Windows/Linux) to open the CloudTempo.