The CoSDN concept exploits the possibility of programming network behaviour that is enabled by the Software Defined Network (SDN) paradigm. The CoSDN concept has the following novelties: using SDN, it enables personalized (personalized QoS and security on per flow basis) and advanced network services (multicast with QoS, …);uses real-time cognitive algorithms with learning in order to optimize the overall network performance (including energy efficient approach (though this is not likely to be covered)) and security; decomposition of network multi-criterion optimization problem into a set of quasi separated single criterion problems by ‘cognitive interaction’; network nodes exhibit some degree of self-configuration, and their re-configuration (including AAA), will be done in real-time during network operations in order to achieve better user experience ability to cope with dynamic topology changes; provides proactive fault management based on faults such as anomalies; implementation is based on autonomic network management and control frameworks. The main innovation of the CoSDN concept is integration of SDN with autonomic network management and cognitive algorithms. From the scientific point of view the focus is put on the algorithmic side whereas SDN and Autonomic Network Management (ANM) concepts are used as tools/instruments. We would like to emphasise the seamless integration of security mechanisms and features. The main expected result of the project is a set of innovative algorithms for the CoSDN networks, with potential impact on standards related to Autonomics and OpenFlow-based SDN.