Google Cloud Shell provides you with command-line access to your cloud resources directly from your browser. You can easily manage your projects and resources without having to install the Google Cloud SDK or other tools on your system. With Cloud Shell, the Cloud SDK gcloud command-line tools and other utilities you need are always available, up to date, and fully authenticated when you need them. -GCP Docs
Highlights:
Web browser access
No need for a local terminal
No PuTTY!
Automatics SSH key management
5 GB of persistent storage
Easy-access to pre-installed tools
gcloud, bq, kubectl, docker, npm/node, pip/python, ruby, vim, emacs, bash, etc.
Pre-authorized and always up-to-date
Web preview of web app running on local port