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How does Growth Driven Design Work? An Agile Approach to Website Development

Luke Marthinusen | February 6 2020

Do you want website growth metrics that look like the image below?

If your answer is yes, then you need to consider how websites are built and continuously improved over time.

Online ROI

For years, the traditional approach to a website build has been to agonise over the build for months on end. You pull all the stakeholders, departments and next door neighbours in to get all the different opinions.

After 6 - 12 months and on the verge of a divorce, the site is launched. Everyone pats themselves on the back and sits back to admire their creation.

Great, right?

Not really...

Right there is the problem, everyone continues to sit back and expect the website to do its job. Unfortunately, the website performance tends to look something like this over time.


And like the chart above, no one can understand anything, except that the results point one way - down.

Ok, so what is the solution to this?

Growth Driven Design, and let me explain why. 

What is Growth Driven Design?

Growth Driven Design (GDD) is an 'agile' method to building and launching a new website.

There are three distinct phases in a Growth Driven Design website project.

1. Strategy

In this phase, you develop an understanding of your audience’s world and how your website can solve problems along their journey. You list all your website requirements/features and then filter them down in order of importance.

2. The launch pad

Quickly build a website that looks and performs better than what you have today, but is not a final product. Rather, your launch pad is the foundation on which to build and optimise from.

Build the launch pad website to include only the top 20% features discovered in Phase 1 - Strategy.

3. Continuous improvement

With a launch pad site live and collecting user data, you can start identifying the high-impact actions you can take to grow your business.

Every month is a continuous improvement cycle. Each month you build in additional website features based on:

  1. Initial features list
  2. Learnings from the live launch pad site.

Why the GDD process works better than traditional website builds

The process and website performance over time is shown below. Many small steps are taken, and performance increases monthly.

This is in contrast to a traditional website build where performance enhancements only happen every two years or so.


Traditional web design works, but it takes a skilled guide to bring the project in on-budget and on-time.

In addition to this, there is a large upfront investment, and decision making that is centred around a combination of historical data and best judgement.

Basically, the redesign/rebuild is based on a hypothesis of what will work best, and to do this one needs to look at the performance of the site over its entire life. This is not the optimum way to get the best out of a website build.

The #1 rule with a Growth Driven Design project 

So, if you want to try implement a Growth Driven Design project there is one very important thing to always remember:

Never let the stakeholders add requirements/features to the list unless they have been worked through the priority list of requirements you set up in the beginning. 

The list of features you spent time agonising over in - Phase 1: Strategy - must always be kept in mind. The top 20% features you built into the launch pad site has made a difference. But it's now time to implement the features at the top of the list of the remaining 80%. 

Be cautious about stakeholders adding requirements to the original launch pad list. If they have to, make sure the original requirements and priorities are not forgotten.

Continuous improvement must take into account new ideas and requirements as they surface. But never lose sight of the original priorities. 

Never break this rule.

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