In the middle of a scrubby business park on the outskirts of Dublin, a hulking grey building has recently sprung up. It is protected by high, spiked railings and two sets of steel security barriers that are thick enough to stop a tank. There is no name above the door, but this 303,000 sq ft industrial building is Microsoft’s new mega data centre, its first large-scale computing facility in Europe, representing an investment of $500m (£300m, €335m).
