Many modern fast Fords, like the Mk3 Focus RS and Mk8 Fiesta ST, come with launch control systems fitted as standard, but almost any car can have similar systems fitted; whether a function offered from a fancy aftermarket ECU or a standalone launch control system.
Some simple systems are little more than a rev-limiter, holding your engine a set revs before you dump the clutch, allowing you to minimise wheel spin off the line. However, more complicated systems are much more sophisticated, and will interact with the rest of the car to ensure the best possible launch. Some systems, like that on the Mk3 Focus RS, will actually stiffen up the rear dampers to control weight transfer under acceleration too. And some systems will allow turbocharged cars to create boost while holding at set engine revs on the start line too, meaning the moment you launch you’ve got much more power (in some cases, full power!) available to get you off the line.