Interesting talks from the craft conf 2015

These days I've finished watching all presentations Craftconf 2015, and IMHO these are the most interesting:

• Complexity is Outside the Code  Dan North & Jessica Kerr 
• The New New Software Development Game: Containers, Micro Services  Mary Poppendieck 
• Concurrency: It's Harder (and Easier) Than You Think  Paul Butcher 
• Beyond Features: Rethinking Agile Planning and Tracking  Dan North