1. Big Design Up Front is Dead. Long Live Emergent Design Audrys Kažukauskas, UAB „Net Frequency“ Team Lead Development [email_address]

2. Target Name : Waterfall Other names : Big Design Up Front Food: programmers Other info : Deadly

3. BDUF serves well in

4. despite this huge thinking up-front, still major mistakes are made

5. dams collapse... Teton Dam, USA, 1976

6. spacecrafts fall down in pieces... Mars Climate Orbiter, NASA, 1998

7. microchips are shipped with major bugs... Cougar Point chip, Intel, 2011

8. So BDUF came into software development...

10. Changes later are COSTLY and very HARD, BDUF says

11. But... we develop soft ware, don't we?

12. Materials are cheap. Building is cheap. Changes are easy. soft ware is different

13. "programming is not about building software; programming is about designing software" {Jack W. Reeves}

14. "In software development, the design document is a source code listing" "the only way we validate a software design is by building it and testing it" {Jack W. Reeves}

18. Listen to your code, allow design to emerge

22. True TDD leads to emergent design

23. How much design up-front is enough?

24. Audrys Kažukauskas, UAB „Net Frequency“ Team Lead Development [email_address] Long live Emergent Design!