Savills Tech Cities index measures 30 cities from around the world against 100 individual metrics, ranging from the volume of inward venture capital investment through to the cost of a flat white coffee, to establish which cities are the most successful homes for tech and start-up companies.
Cities worldwide have been graded on the following criteria:

Amsterdam has been named #4 worldwide, meaning that the startup culture in Amsterdam is coming to life!
For more information see this article by Saville.