Corporate portal

Portal came from latin "porta"- entrance, gate, architecturally detailed entrance on facade of big building. Lately we use phrases "information portal", "corporate portal", "external portal", "internal portal". These phrases are used very often, but they are understood polysemanticly. So what is portal in modern meaning of information technology industry?
It is said - Everything is in Internet and I can't find it in Internet.

This expressions are the essence of modern state of information technoligies. During last decades technological progress substatively widened technical capabilities of information technologies. Hardware and software allow to accumulate such huge arrays of information, which couldn't imagine the bravest branes before. Though these arrays of information are structured badly, it is hard to find something there.

To solve this problem of modern information technologies is main aim of portal. Architectual portal helps to find entrance in great building. Portal helps to find orientation in huge arrays of information, to create own personalized entry point. This entry point allows to ajust information filters in a way to obtain only needed information. Besides portal allows to collect in one location information necessary for decision making.