Earlier models of insurgency spend a great deal of time building and preserving a cell structure while establishing a shadow government, a (semi-)legitimate political front, and eventually creating 'no-go' areas within the region. There has to be some form of sanctuary (historically geographical, and often in a different sovereign region) from the beginning, and usually external financial and material support.

AQ has written a new script. Their public statements assert that their plan is that
"NO one should feel safe without submitting to Islam, and those who refuse to submit must pay a high price. The Islamist movement must aim to turn the world into a series of "wildernesses" where only those under jihadi rule enjoy security."
, Sheik Abu-Bakar Naji, in "Governance in the Wilderness". Rather than methodicly building up their capabilities, they are trying to disrupt their opponents and move in to the security void. They are not bothering with much in the way of a legitimate political front in the system (like Sinn Fein), but establishing a new political system in vacuums (like the Taliban). Much of this is done exploiting 'wannabes', viral disemination of TTPs, and rather than doing things themselves, encouraging others to do things for them.

What has stayed the same; the need for sanctuaries (although some aspects of traditional sanctuaries have migrated into the internet), and the need for financial and material support. Zakat (Islamic charitable donations mandated by the Koran) is a natural source of income, as they sell themselves as a "holy" cause, and historically, terrorists routinely use conventional crime as income source. I'm not saying AQ is in the opium business, but they would surely be tempted by it, and if their not in it, the 'good Muslims' in the trade have to make Zakat somewhere... Of course, there are many illicit and profitable trafficks in Central Asia, one of the more novel ones being the smuggling of birds of prey.

I think the AQ model is well suited to a theologically based movement, which explains the departure from the traditional models which were ideologically and politically based.