You are now ready to implement the new service design.

Launch it in stages, providing access to the service to a restricted number of users at each point of release. Capture feedback and troubleshoot any issues or glitches that arise to optimise the service and ensure its viability. Manage the risk of failure by ensuring your service also adheres to required standards and is compatible with existing services and processes before introducing it more widely. Continue to test, learn and improve by monitoring the service as it rolls out.

Evaluate its impact to demonstrate success.


Key Topics

Make sense of the data and pinpoint the right problem before moving onto solutions

Find out more Find out more


Use this summary to see if you have what you need for this stage

Find out more Find out more

Start with the why, and then select the tool

There are a wide range of tools available for each stage of the design process. It is important to think about what you seek to achieve and then to find or create a tool that would help you to do that.

You can find a full list of tools in the Tool Directory, but here are some suggestions to get you started in Deliver:

Success criteria

Success criteria are a set of agreed metrics that are measured to evaluate the success and impact of a project.

This is typically done at the implementation stage of a service and should be an iterative process of feedback and evaluation.


Stages of the Double Diamond

Creating the conditions

In our programmes at Healthcare Improvement Scotland, we learned that it is important to build readiness for change, identify the right people to be involved, and to plan effectively

Find out more


Understand the challenge space

Find out more


Develop insight to clarify what you will focus on

Find out more


Co-create possible solutions that are visual and engaging to test with service users

Find out more
Last Updated: 13 December 2023