Common Web Platform (CWP)

The Common Web Platform is a platform-as-a-service offering for the creation and hosting of government websites.

Common Web Platform is opt-in for all eligible government agencies.
Status Operational

Agency Contact

The Department of Internal Affairs Kayleigh Shepherd All of Government ICT Capability Manager

Case studies

  • 06/07/2017 Collaboration, co-funded development and a new document management module CWP and MPI have used the co-funded development pool to improve the Document Management System (DMS) module, making it easier for all Government agencies to create, maintain and manage documents.
  • 10/07/2015 New Zealand Blood Service The New Zealand Blood Service needed a new platform for their website; here’s how and why they decided on the Common Web Platform.
  • 19/05/2015 Sport New Zealand The Sport NZ website has been on the Common Web Platform (CWP) for about a year. The move to CWP underpinned a bigger project: to improve the user experience (UX), web standards, project agility and to provide technical flexibility. We also saw it as a way to amalgamate sites.

Product updates

  • 18/09/2015 Open sourcing our complaints code When people make a complaint about privacy to us, the information is often sensitive and personal. For that reason, our web developers have developed a module for us that encrypts the complaint information when it is lodged online. We are making that solution available as an open source resource.
  • 27/03/2015 Common Web Platform: making code sharing better This post discusses the work the Internal Affairs is undertaking to improve code sharing on the Common Web Platform. This includes guidance prepared by the Community Manager at SilverStripe in response to issues raised at a better code sharing workshop late last year.
  • 21/11/2014 Common Web Platform wins Open Source Award The Common Web Platform (CWP) was the winner in the ‘Open Source Use in Government’ category at the 2014 NZ Open Source Awards. This blog post talks about the event, how another finalist Piwik is being considered for CWP, and how CWP fits into the broader context of open source.

Service Description

The Common Web Platform (CWP) is a platform-as-a-service offering for the creation and hosting of government websites. CWP offers more services than a web hosting solution, but is not a software as-a-service product. Services include patching, disaster recovery, an online code repository and a co-funded development pool.

Agencies maintain control of their websites, including the look and feel, and can extend the functionality as required.

Agencies set up an account and start using the CWP functions provided. The platform provides parts of the solution and the agency controls the rest.

The agency controls:

  • the look and feel of the website;
  • the suppliers of professional services to manage and develop the websites;
  • the content;
  • the website's code;
  • bespoke development to integrate their website with other systems; and
  • other custom features and templates.

Silverstripe deliver and manage the software solution. The supplier solution is an enhanced version of the Silverstripe CMS and Solr Enterprise search with out-of-the-box features and templates selected to meet the needs of government websites. Silverstripe also provide:

  • support and assistance to agency staff;
  • services for agency developers / site administrators;
  • reporting;
  • 24/7 service desk; and
  • an online code repository that allows sharing and reuse of code between agencies.

More information can be found on the Common Web Platform website.


Silverstripe and Revera are contracted to provide the Common Web Platform.

Revera provides the relevant infrastructure, network and firewall under one of the Government's Infrastructure-as-a-Service (IaaS) contracts. Agencies deal directly with Silverstripe, and do not sign a contract with Revera.


Website developments are usually treated as a one-off project, requiring unnecessary reinvestment in design, development, procurement and security. With CWP, agencies can use investments already made in technology components, designs, and contracts.

The Common Web Platform:

  • reduces unnecessary investment by supporting agencies to reuse technology and designs already developed by other agencies;
  • provides tools, versioning, and backups to help agencies comply with the Public Records Act 2005;
  • provides base website templates tested for compliance with the New Zealand Web Standards, reducing the risk of publishing inaccessible content;
  • provides a platform architecture that has been through an independent security review, reducing the reputational risk of websites being compromised;
  • provides regular patching and software updates, reducing the reputational risk of the website being compromised;
  • provides software and infrastructure components as a service, reducing the risk of poor performance or downtime due to relying on ageing software and hardware;
  • provides a single content management system across the agency, reducing the risk of staff making publishing errors, and making it easier for business units to collaborate on content;
  • provides a comprehensive legal contract, which reduces legal costs and includes financial incentives for the provider to meet the agreed service levels.;
  • provides a base install, with website templates and features selected to meet the common requirements of government web projects. This allows websites to be set up with urgency and reduces time for web projects;
  • provides advanced tools, including enterprise search and Word Document conversion, for use across all CWP websites, without the effort to set them up;
  • provides control to develop a website that is agency specific, without restriction on design and functionality;
  • makes new features and Content Management System (CMS) enhancements available at no extra cost, through the co-funded development pool; and
  • provides a fit-for-purpose CMS, making it easy to update and restructure content.


Features and services are continually improved through a co-funded development pool. The development pool is managed by The Department of Internal Affairs with input from agencies using the platform.

Lead Agency

Internal Affairs

Parent Programme

Rethink Online

Adopting the service

Agencies wanting to adopt the Common Web Platform don't need to undertake a procurement process. The lead agency has procured the product on behalf of all agencies and has signed a Lead Agency Agreement with the vendor.

Agencies can take advantage of the work done by the Lead Agency by contacting the product manager and following the process below:

  1. Sign a standard confidentiality agreement so the vendor's catalogue can be released.
  2. Sign a Memorandum of Understanding (MoU) with Internal Affairs as Lead Agency. This MoU sets out each party's rights and obligations.
  3. Sign a Participating Agency Agreement (PAA) with the supplier.
  4. Once the MoU and the PAA are agreed agencies deal directly with SilverStripe who will assist agencies to build new sites or transition existing sites.

The PAA along with the CWP terms and conditions, as agreed in the Lead Agency Agreement with Internal Affairs, constitutes the contract to deliver CWP services to agencies.

Lead Agency Agreement summary

  • Closed Supplier Panel
  • Syndicated
  • Initial three-year contract beginning September 2013 with two, t

Lead Agency Agreement details

The Department of Internal Affairs, as lead agency, has entered into a Syndicated Procurement Agreement (Lead Agency Contract) with SilverStripe for the purchase of the Common Web Platform. The initial contract term is for three years with two two-year optional renewals.

Revera provides the infrastructure under a Common Capability ICT Agreement (CC-ICT) with The Department of Internal Affairs for cross-government Infrastructure as a Service. This agreement allows authorised third-party suppliers who supply services to eligible agencies to use the government IaaS to benefit government agencies.

Supplier Information

Common Web Platform management services

Contract Began September 2013

Tanya Price Channel Relationship Manager

Agencies using the service

  1. Airways Corporation
  2. AsureQuality
  3. Auckland District Health Board
  4. Callaghan Innovation
  5. Careers NZ
  6. Christchurch City Council
  7. Civil Aviation Authority
  8. Counties Manukau DHB
  9. Department of PM and Cabinet
  10. Enable NZ 
  11. Environment Canterbury
  12. Environment Science and Research
  13. Environmental Protection Agency
  14. Financial Markets Authority
  15. Hawke's Bay DHB
  16. Health Alliance
  17. Housing New Zealand
  18. Inland Revenue
  19. Internal Affairs
  20. Leadership Development Centre
  21. Ministry for Primary Industries
  22. Ministry of Business, Innovation and Employment
  23. Ministry of Defence
  24. Ministry of Education
  25. Ministry of Foreign Affairs and Trade
  26. Ministry of Health
  27. Ministry of Justice
  28. Ministry of Pacific Island Affairs
  29. Ministry of Social Development
  30. Ministry of Transport
  31. Nelson Marlborough Institute of Technology
  32. New Zealand Defence Force
  33. New Zealand Fire Service
  34. New Zealand Transport Agency
  35. NZ Blood
  36. NZSIS
  37. Office of the Privacy Commissioner
  38. Otago Polytechnic
  39. Parliamentary Council Office
  40. Pharmac
  41. Real Estate Agents Authority
  42. Social Investment Agency
  43. Southland District Council
  44. Sport NZ
  45. Statistics New Zealand
  46. Superu
  47. Tasman District Council
  48. Te Taura Whiri I te Reo Māori
  49. Thames Coromandel District Council
  50. Treasury
  51. Waikato DHB
  52. Waikato Regional Council
  53. Whanganui DHB
  54. Worksafe