What is the suggested way to store unique configuration of a template under section architecture?

From Static and dynamic sections, it states that:

A section can be included in multiple templates, but there exists only one instance of that section. When a merchant changes the configuration of a static section in one place, that change will apply to all other places where the section is included. Note that sections cannot include other sections.

If I want to store the unique configuration of a template, what is the best practice? Using metafields to store it? I want the configuration to only change 1 template instead of multiple templates to be changed at once


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