[paxys]

No company I have ever worked for has had growth engineering salaries come out of the marketing budget. And there's no such thing as a "maintenance" budget either. It is all simply R&D/engineering. Sure the expectations are very different depending on your team/role, but that's not a budget thing, and depends on how the company tracks its goals.

[SkyPuncher]

These budgets aren't often labelled as explicitly as the article states, but I've found they're generally accurate.

You either make money now (sales), you build long term value (product), or are circling the drain (maintenance) on an existing product.

[paradite]

I think the budget is used figuratively here to mean where your contribution / value-add to the company is.