Legacy systems cheat sheet

[magicpuddingcat]

You're A Rockstar

Thank you for submitting a Pull Request (PR) to the Cheat Sheet Series.

:triangular_flag_on_post: If your PR is related to grammar/typo mistakes, please double-check the file for other mistakes in order to fix all the issues in the current cheat sheet.

Please make sure that for your contribution:

• [ ] In case of a new Cheat Sheet, you have used the Cheat Sheet template.
• [ ] All the markdown files do not raise any validation policy violation, see the policy.
• [ ] All the markdown files follow these format rules.
• [ ] All your assets are stored in the assets folder.
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If your PR is related to an issue, please finish your PR text with the following line:

Thank you again for your contribution :smiley:

[magicpuddingcat]

This took quite a bit longer than I expected because life... Requesting to move this cheat sheet into the main cluster for publication. Since the draft was reviewed, I've just made some edits for readability and added one extra point under authn/authz. Please do let me know if there are any details that might be beneficial that I might add or anything that reads poorly on this inspection. TIA for PRing!

[szh]

Is this PR copying the draft cheat sheet to the main directory? If so, can you please remove it from drafts?

[magicpuddingcat]

Is this PR copying the draft cheat sheet to the main directory? If so, can you please remove it from drafts?

Yes, that's the intent. :) Thanks for picking that up! I think that should all look right now but let me know if not.