Demonstrate how to apply patterns through example architectures for specific use cases

[russelltrow]

Raised in #193

Asim said that's a really good point, I remember discussing some training in this space years ago and we landed on the idea of:

• Describe the initial state of the application architecture.
• How you would measure it.
• Describe the changes you would make to the new architecture.
• Measure it, see the impact.

So far more pragmatic, how do you actually reduce the carbon emissions of a reference architecture application.

Back then we didn't have even the SCI way of measuring so it was impossible really. Now we have the SCI and the patterns we have all the pieces!

Step by step, ref arch, how you would measure, then the patterns from the catalog for improving and then how you would measure in the end.