The best way to transform government is to solve common problems once. For instance, we're making it easier, faster and more efficient to get services live by building a new Platform as a Service to benefit everyone in government. Find out how we've approached building a modern, open source, multi-tenant PaaS – what we're doing, which technologies we're using, how we've made sure we chose the right ones, and why this is a big deal!

1. Colin Saliceti
Web operations engineer
Government Digital Service
colin.saliceti@digital.cabinet-office.gov.uk

2. Building a PaaS
for Government

3. What is GDS?
GDS

4. “We help government make digital
services and information simpler, clearer
and faster.”
GDS

5. “We put users' needs before the needs of
government.”
GDS

6. GDSwww.gov.uk

7. 14m unique visitors a month
more than 800 services
GDS

8. GDS
GOV.UK
unique visitors

9. GDSwww.gov.uk/service-manual
GDS
Service manual

10. How do we host these services?
GDS

11. In 2015 GDS launched
Government as a Platform
GDS

12. “A common core infrastructure of shared
digital systems, technology and
processes on which it’s easy to build
brilliant, user-centric government
services.”
GDSgovernmentasaplatform.blog.gov.uk

14. GaaP includes
Platform as a Service for Government
GDS

15. What is a Platform as a Service?
GDS

16. bit.ly/1n1ixhp GDS

17. GDS
Controller
CellCellCellCellCellAppsRouter
CellCellCellCellCellServices
Developer
Users
(you)

18. GDS

19. GDS
tsuru

20. What did we do?

21. GDS
Selection process

22. Must have: multi-tenant
GDS

23. Must have: self service
GDS

24. Must have: multi-vendor
GDS

25. Must have: multi programming language
GDS

26. Must have: add backend services
GDS

27. Must have: resilient to failure
GDS

28. 26 criteria and investigation points
27 solutions considered
13 solutions tested
GDS

29. GDS
tsuru

30. GDS
tsuru

31. We built full scale prototypes
GDS

32. We let the users deploy their apps
GDS

33. We made our choice
GDS

34. GDS
tsuru

35. GDS
tsuru
bit.ly/1nigif2

36. GDSbit.ly/1nigif2

37. Going a bit
deeper

38. Our cloud provider is currently AWS
GDSaws.amazon.com

39. We use Terraform to build low-level infra
GDSwww.terraform.io

40. GDSwww.terraform.io

41. GDS
IaaS configuration
www.terraform.io

42. We use BOSH to deploy and manage
Cloud Foundry
GDSbosh.io

43. GDS
BOSH
bosh.io

44. GDS
IaaS configuration
bosh.io

45. GDS
IaaS configuration
Cloud Foundry servers
Cloud Foundry processes
BOSH
bosh.io

46. We orchestrate the build with Concourse
GDSconcourse.ci

47. GDSconcourse.ci

48. GDS
IaaS configuration
Cloud Foundry servers
Cloud Foundry processes
BOSH
concourse.ci

49. GDS
IaaS configuration
Cloud Foundry servers
Cloud Foundry processes
BOSH
concourse.ci

50. And finally…
GDSconcourse.ci

51. GDS
IaaS configuration
Cloud Foundry servers
Cloud Foundry processes
BOSH

52. GDS
IaaS configuration
Cloud Foundry servers
Cloud Foundry processes
BOSH
User deployed applications

53. It’s open: github.com/alphagov/paas-cf
GDS

54. Thanks!
Colin Saliceti
colin.saliceti@digital.cabinet-office.gov.uk

55. We’re hiring

56. gds.blog.gov.uk/jobs