Add loose/tight coupling

[dret]

I just discovered this excellent resource! As a test balloon, I'd like to add loose and tight coupling.

These are well-known concepts from the world of protocols and computer communications. How exactly you define them is not as important, but it is important to understand that when interconnecting components, trying to allow them to independently evolve makes your system much less brittle.

Here's a rather old paper discussing the terms: Pautasso, C., and E. Wilde, "Why is the Web Loosely Coupled? A Multi-Faceted Metric for Service Design", 18th World Wide Web Conference (WWW2009), Madrid, Spain, ACM, pp. 911-920, April, 2009.