Why reBuy has chosen xamarin. Presentation held at the Mobile .NET Developer's Group Berlin, February 2015 Meetup. Video of the presentation: http://youtu.be/S7KOlbjnO0Y

1. Why xamarin?
1

2. Agenda
1. Introduction
2. Being sceptical
3. Arguments
4. Evaluation
5. Current state
6. Conclusion
2

3. Introduction
3
Company: reBuy reCommerce GmbH
Peak into our Software stack:
PHP, Java, Scala, c#, Some ruby,
some python, ObjectiveC, nginx,
microservices, AMQP, MySQL,
PostgreSQL, Solr, github, kvm,
puppet
Me:
Ota Mares, 31 years of awesome
Responsible for the Mobile platform
Mobile Team: 4,5 Persons (3,5 IT + 1 PM)

4. Introduction
4

5. Being sceptical
5

6. Being sceptical
Cross platform solution?
Transpiling code?
Sucky performance?
Not in sync
Getting expelled!
Community
Costs
6

7. Arguments
7

8. Arguments
• Code duplication is out of fashion ;)
• One codebase to rule them all
• Hey look its c#!
• “Word of trust”
8

9. Arguments
MONEY
9

10. Evaluation
10

11. Evaluation
• Efficiency
• Performance
• Risk & Sustainability
• How proven is it
11

12. Evaluation
• Efficiency?
12
Time spent on learning, Learning curve, Code quality,
Development speed, Code reusability,
Documentation, IDE & Tooling

13. Evaluation
• Performance?
13
Smoothness, Size, Speed, Stability, Limitation on
functions e.g. Push Notifications, Feature support,
Crash tracking

14. Evaluation
• Risk & Sustainability?
14
Approval process, Data privacy issues,
Xamarin disappearing from the surface

15. Evaluation
• How proven is it?
15
Community, Libraries, References

16. Current state
16

17. Current state
• 7 Weeks into development
• ~5239 LOC
• Using Xamarin.Forms
• Had a few issues with XF
• No issues at all with xamarin itself
• It is like we never did something else before :)
17

18. Conclusion
18

19. Conclusion
The better question would be: why not xamarin?
19

20. We are hiring!