[Spike] Review Github Enterprise Cloud doc

[bzarboni1]

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ISSUE

Review the document called How to get started with GitHub Enterprise Cloud

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QUESTIONS

• Do we need a sandbox org? (A sandbox organization is a place in which any user can create a repository)
• Are users allowed to create repos in their personal namespace?
• How to handle webhooks? Are they allowed?
• API access / Access tokens?
• GH Mobile app?
• Will Copilot be offered?

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