Continuous Delivery: How the BBC is delivering better software faster

1. How does the
BBC deliver
better software
faster?
Chris Northwood
Principal Software Engineer
BBC Digital

2. CC-BY SALFORD UNIVERSITY

4. Continuous Delivery
• Deploying code to live automatically
• Using a Continuous Delivery tool

5. Continuous Delivery
• Deploying code to live automatically
• Using a Continuous Delivery tool

6. Continuous Delivery
• Removing bottlenecks to release
• Empower teams
• Fast feedback, rapid iterations

7. FTP, HTML and Perl scripts
REST, SOA, continuous integration
Modern web development at last!

10. Continuous Delivery
at the BBC
• Move control from central “Online
Technologies Group” to individual
teams
• Move to devops support model
• Move to cloud infrastructure

12. Our Principles
• Automate all the things
• Zero defect backlog
• Small, vertically sliced features

13. HENRIK KNIBERG

15. Run test suite on sandbox
Code Sniffer
Code coverage
NFRs
Feature Level
Testing
App Level
Integration Testing
Regression
Testing
Promotion from int to test
Release sanity checks
KDF run
Manual regression
KDF Run
Update KDF Pack
DoD Updated
Automated Regression
Live Release
Product
Definition
Feature
Build
Testing
Phase
Release
phase
Tech spike
UX Spec
Acceptance Criteria
4 amigos
Story pointing
Prototyping
User testing
Prioritisation
Create feature branch
Create Tests including mock data
Write code
Pairing
TDD
Write Manual Test Cases
TestRail Updated
Test cases reviewed
Identify automation test candidates
Peer review
Fix early bugs
DoD Update
Pull request & code review
Build
Journey of a feature to live
No blocker bugs
Features and dependencies
must be tested before a
release can go
Fix none blocker bugs as next
priority above all
DoD Completed
Test supported device/browser list
Fix bugs triage only when needed
Accessibility testing
Exploratory testing
Manual testing
Test supported device/browser list
Fix bugs triage only by exception
Exploratory testing
Manual Testing
Integration
Load test
Accessibility testing
Technical design
Technical architecture
Updating story points
UX design considered
Accessibility considered
Test considered
Tech spike
Pre Release
Activities
Content release
Co-ordinate with other teams
Post Live Release
Post release activities
Live Sanity check
Release note
Live Regression
KDF Run
Stats analysis / RUM
Tech Discovery
Build Feature
CI
Dev/UX/Test
Review
Push to Test
Feature
Elaboration
Feature Definition

19. Where next?
• BBC Connected Studio events
• BBC Academy
• BBC Internet Blog
• Work with us?