Modular by design - a post that examines the role of modularity in business models. Interesting discussion - I think modularity is a powerful but dangerous weapon strategically. It's powerful because it massively expands the possibility pie which your goods and services enable. But it's dangerous because it exposes you to bigger, faster, or smarter players - because it (usually) makes your key resources replicable and less rare than they were before.
That's why it imposes massive innovation pressure on you, so should be used with care. For example, the outsourced workers of the US are vulnerable largely because their skills are 'modular' - they can be easily replicated in another place and then interfaced with the larger platform.