How We Made our Tech Organization and Architecture Converge Towards Scalability

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In this talk, Dan Persa shared the recipe we have applied to scale our tech team to more than 1,000 people, while redesigning the architecture of our Online Fashion Shop -- Project Mosaic -- to make more than 18 million customers happier. He also shared Zalando Tech’s learnings and takeaways in order to become both more successful and more customer centric.

Technology

How We Made Our
Tech Organization
and
Architecture
Converge Towards
Scalability
Dan Persa
@danpersa
commerce.codetalks
April 2016
Berlin, Germany

2
Senior Software Engineer
@danpersa
dan.persa@zalando.de
DAN PERSA

3
Tech Organization Scalability
Productivity
Architecture Scalability
TABLE OF
CONTENTS

EUROPE’S LEADING ONLINE FASHION PLATFORM
15 countries
3 fulfillment centers
18+ million active customers
~3 billion € revenue 2015
130+ million visits per month
10.000+ employees
Visit us: tech.zalando.com

12
Conway’s Law
“organizations which design systems
...are constrained to produce
designs which are copies of the
communication structures of these
organizations”

TECH ORGANIZATION SCALABILITY
ATTRACT NEW,
TALENTED PEOPLE
KEEP THE TEAMS HAPPY
CREATE DIVERSITY ENCOURAGE INNOVATION

HIRING AS A PRIORITY
FAST FEEDBACK
900-1100
INTERVIEWS/MONTH
INSPIRING TALK

x
900 participants
100 projects
100 nationalities
12 awards

26
Zalando technologists come from more than 72
countries around the world. With so many languages,
backgrounds, beliefs and ideas, how do we make it
work? By celebrating our diversity and learning from
each other. We are all different, but we are all
Zalandos.
MANY BACKGROUNDS, ONE TEAM

30
Do “Open Source First”
If your Zalando project can also be useful to non-Zalandos, release it as open
source from the start.
Share Your Code
All code shared between teams must be open source.
Be Safe
To ensure the broadest possible use of your project, use the MIT License only.
Deliver Quality
Provide a great out-of-the-box experience.
OPEN SOURCE PRINCIPLES

36
OKRS
COMPANY OKRS
FASHION STORE OKRS
OTHER DEPARTMENT
OKRS
PATHFINDER TEAM
OKRS
OTHER FASHION
STORE TEAM OKRS
LOGISTICS OKRS ...
...

ARCHITECTURE SCALABILITY
MANY TEAMS WORKING AT
DIFFERENT FEATURES IN PARALLEL
TEAM AUTONOMY
ADD FEATURES FAST
PROGRAMMING LANGUAGE
DIVERSITY
EASY A/B TESTING AND REMOVING
FEATURES

39
Meet
“Jimmy”
http://blog.codinghorror.com/new-programming-jargon/

Thousands of Java classes, undocumented features
Business logic on all layers (including the database),
while “channels”, copy-pasta JSPs and global JS objects
in the frontend

x
State-of-the-art
architecture that
enables
autonomy and
fosters
innovation

42
Put the Jimmy to REST!
Enable team autonomy
Consistent user experience
Rapid feature development
Continuous deployment
Establish best practices
Tech stack update
PROJECT MISSION

INTERNET
SKIPPER
router
JIMMY
INNKEEPER
route management API
TAILOR
layout service
QUILT
template management API
FRAGMENTS REST APIs

HEADER
CART
TAILOR
layout service CART FRAGMENT
Team COAST
HEADER FRAGMENT
Team Navigation
QUILT
template management API
CART TEMPLATE
TRACKING TRACKING FRAGMENT
Team TRCKNG
https://cart.coast.zalan.do
https://eb-fragment.trckng.zalan.do
https://header-fragment-release.navigation.zalan.do
From Skipper
https://zalando.de/cart

Translation Service
Team Pathfinder
IAM API
Team GreendaleFRAGMENT
Your Team API
Your Team
From Tailor
HTML Render
AJAX APIs
Internal API Client
From Skipper
Cart Service
Team COAST

47
MANY TEAMS
WORKING AT
DIFFERENT FEATURES
IN PARALLEL

x
NEW HIRES
Feb 2015 - 13
March 2015 - 25
Feb 2016 - 54
March 2016 - 61

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Following the popularity of "Cloud Revolution: Exploring the New Wave of Serverless Spatial Data," we're thrilled to announce this much-anticipated encore webinar. In this sequel, we'll dive deeper into the Cloud-Native realm by uncovering practical applications and FME support for these new formats, including COGs, COPC, FlatGeoBuf, GeoParquet, STAC, and ZARR. Building on the foundation laid by industry leaders Michelle Roby of Radiant Earth and Chris Holmes of Planet in the first webinar, this second part offers an in-depth look at the real-world application and behind-the-scenes dynamics of these cutting-edge formats. We will spotlight specific use-cases and workflows, showcasing their efficiency and relevance in practical scenarios. Discover the vast possibilities each format holds, highlighted through detailed discussions and demonstrations. Our expert speakers will dissect the key aspects and provide critical takeaways for effective use, ensuring attendees leave with a thorough understanding of how to apply these formats in their own projects. Elevate your understanding of how FME supports these cutting-edge technologies, enhancing your ability to manage, share, and analyze spatial data. Whether you're building on knowledge from our initial session or are new to the serverless spatial data landscape, this webinar is your gateway to mastering cloud-native formats in your workflows.

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Safe Software

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Exploring Multimodal Embeddings with Milvus

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

How We Made our Tech Organization and Architecture Converge Towards Scalability

1. How We Made Our Tech Organization and Architecture Converge Towards Scalability Dan Persa @danpersa commerce.codetalks April 2016 Berlin, Germany

2. 2 Senior Software Engineer @danpersa dan.persa@zalando.de DAN PERSA

3. 3 Tech Organization Scalability Productivity Architecture Scalability TABLE OF CONTENTS

4. EUROPE’S LEADING ONLINE FASHION PLATFORM 15 countries 3 fulfillment centers 18+ million active customers ~3 billion € revenue 2015 130+ million visits per month 10.000+ employees Visit us: tech.zalando.com

5. 5 ZALANDO FASHION STORE

6. 6 ZALANDO TECHNOLOGY

7. 7

10. 500+ Apps 1100+ Tech employees 2016

11.

12. 12 Conway’s Law “organizations which design systems ...are constrained to produce designs which are copies of the communication structures of these organizations”

13. 13 WHY CHANGE?

14. TECH ORGANIZATION SCALABILITY ATTRACT NEW, TALENTED PEOPLE KEEP THE TEAMS HAPPY CREATE DIVERSITY ENCOURAGE INNOVATION

15. 15 ATTRACTING NEW TALENT

16. HIRING AS A PRIORITY FAST FEEDBACK 900-1100 INTERVIEWS/MONTH INSPIRING TALK

17. x DO GOOD THINGS AND TALK ABOUT IT

18. 18 CONFERENCES MEETUPS TECH BLOG

19. 19 KEEP TEAMS HAPPY

20. x 900 participants 100 projects 100 nationalities 12 awards

21. 21 Tech Academy

22. 22 CODER DOJOS

23. 23

24. x How to measure team happiness?

25. 25 CREATE DIVERSITY

26. 26 Zalando technologists come from more than 72 countries around the world. With so many languages, backgrounds, beliefs and ideas, how do we make it work? By celebrating our diversity and learning from each other. We are all different, but we are all Zalandos. MANY BACKGROUNDS, ONE TEAM

27. 27 ENCOURAGE INNOVATION

28. x OPEN SOURCE

29. 29 http://zalando.github.io/

30. 30 Do “Open Source First” If your Zalando project can also be useful to non-Zalandos, release it as open source from the start. Share Your Code All code shared between teams must be open source. Be Safe To ensure the broadest possible use of your project, use the MIT License only. Deliver Quality Provide a great out-of-the-box experience. OPEN SOURCE PRINCIPLES

31. 31 Slingshot

32. 32 ONBOARDING

33. 33 PRODUCTIVITY

34. 34 The Tech Constitution

35. 35

36. 36 OKRS COMPANY OKRS FASHION STORE OKRS OTHER DEPARTMENT OKRS PATHFINDER TEAM OKRS OTHER FASHION STORE TEAM OKRS LOGISTICS OKRS ... ...

37. ARCHITECTURE SCALABILITY MANY TEAMS WORKING AT DIFFERENT FEATURES IN PARALLEL TEAM AUTONOMY ADD FEATURES FAST PROGRAMMING LANGUAGE DIVERSITY EASY A/B TESTING AND REMOVING FEATURES

38. 38 THE SHOP MONOLITH

39. 39 Meet “Jimmy” http://blog.codinghorror.com/new-programming-jargon/

40. Thousands of Java classes, undocumented features Business logic on all layers (including the database), while “channels”, copy-pasta JSPs and global JS objects in the frontend

41. x State-of-the-art architecture that enables autonomy and fosters innovation

42. 42 Put the Jimmy to REST! Enable team autonomy Consistent user experience Rapid feature development Continuous deployment Establish best practices Tech stack update PROJECT MISSION

43. INTERNET SKIPPER router JIMMY INNKEEPER route management API TAILOR layout service QUILT template management API FRAGMENTS REST APIs

44. HEADER CART TAILOR layout service CART FRAGMENT Team COAST HEADER FRAGMENT Team Navigation QUILT template management API CART TEMPLATE TRACKING TRACKING FRAGMENT Team TRCKNG https://cart.coast.zalan.do https://eb-fragment.trckng.zalan.do https://header-fragment-release.navigation.zalan.do From Skipper https://zalando.de/cart

45. Translation Service Team Pathfinder IAM API Team GreendaleFRAGMENT Your Team API Your Team From Tailor HTML Render AJAX APIs Internal API Client From Skipper Cart Service Team COAST

46. 46 API FIRST REST

47. 47 MANY TEAMS WORKING AT DIFFERENT FEATURES IN PARALLEL

48. 48 STUPS.IO

49.

50. x NEW HIRES Feb 2015 - 13 March 2015 - 25 Feb 2016 - 54 March 2016 - 61

51. x THANK YOU! QUESTIONS? @danpersa