[s-shellfish]

I agree. From my inferences in reading the usage of the label, large scale means not only users interacting with defined components that operate in predefined, predictable, static ways, but also components that involve the automation of development. This can be anything from the development of APIs, testing frameworks, parsers, code generation - all the computer science stuff basically.

Large scale usually means some aspect of the business is focused on catering to developers, because the systems have become that complex that they require some form of automating existing automation.