The Observatory is hosted at Linode.com
The application resides within a virtual machine – called a Linode in their context – which has been configured using the following guidelines:
Getting Started with Linode
How to Secure Your Server
Install a LAMP Stack on Debian 10 (Buster)
How to Install WordPress on Debian 10
Enabling HTTPS Using Certbot with Apache on Debian 10 and 9
