Building a classical On-Premise Data Warehouse via ETL processes and OLAP cubes often ends in delayed projects, additional costs and headache for IT managers. New techniques, methods and the cloud give us possibilities to reduce setup times and provide a more flexible and scalable solution.
Cloud (Plug and Play)
With big cloud providers like Amazon, Google, etc. IT services like Data Warehouses, Databases and a lot more come via plug and play. Providing a Data Warehouse service like Big Query  or Redshift  comes per click. Public clouds are also providing way more computing power as a self hosted computer center will ever do.