Does Github include a dedicated or a shared database instance for every enterprise Cloud license?
GitHub Enterprise Cloud Organizations and Enterprise Accounts run on shared hardware.
So each organization and/or Enterprise Account is not isolated from other organizations based on hardware.
Having said that, these organizations and Enterprise Accounts come with security features such as SAML enforcement, domain verification, etc that allow you to protect your information and only allow users within your organization to interact with your company’s resources.
If they are looking into existing offerings that offer a bit more resource isolation we of course have GitHub Enterprise Server which can be hosted on a cloud service of their choice or within in-house hardware.
For more details we can probably direct them to our sales contact info.