What is Loosely Coupled?
Modules know little about each other's internals. A change in one place should not ripple everywhere.
email swapped · billing untouched
Loosely coupled modules…
Write it in your own words in the app.
In real work
Loosely coupled: billing stays separate from email so we can change templates without touching charges.
In the illustration
The email module unlatches, lifts out and a new template module drops in its place; the billing module's charge counter keeps ticking through the whole swap.
Review the analytics and auth modules in your coding agent and list every place they reach into each other's internals. Make them loosely coupled with one event the auth module publishes and the analytics module subscribes to.
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