In this 10+ page report, Grant Lenahan, Principal Analyst from Appledore Research, covers the important topic of Distributed Denial of Service (DDoS), and provides a very enthusiastic and positive endorsement of the Nokia Deepfield DDoS security solution, which combines big data analytics (Deepfield) with network-based protection (IP routers) for automated, scalable, cost-effective protection against the most damaging type of DDoS - volumetric DDoS.