Mobile Sites Certification from Google

It was my first study jam session as a facilitator for Google Developers Group, SG (GDG-SG). Rahul, Senior Software Engineer at PropertyGuru joined with me in facilitating the session. He arranged the event at PropertyGuru SG HQ and was also a wonderful host.

GDG StudyJam

This post is about the certification and the assessment exam.

About the Assessment

This certification is focused to point out the important optimization factors for mobile websites. The content of the course covers mobile website topics like UI, UX, user design principles, advanced technologies like Progressive Web Apps (PWA) and Accelerated Mobile Pages (AMP).

Target Audience

It is stated that this course is targeted for web developers, webmasters, or technical professionals creating mobile websites to demonstrate your expertise. However, my observation is that it is also suited for product managers, product owners, students and analytics teams who would want to understand what it takes to optimize a mobile site.

The feedback from participants at the study jam session was similar to my observation. One of the participant stated that this course helped add context to the functionalities aspect of what he focuses on as a developer.

The Content

The course has 4 main modules as follows:

  1. Why does mobile site matter?
  2. Improving mobile site speed
  3. User Design Principles for mobile site
  4. Advance web technologies

I liked the module 3 over the others. Google and AnswerLab conducted a research study examining how a range of users interacted with a diverse group of mobile sites. The study uncovered 25 mobile site design principles, grouped into five categories. While these were very common factors we encounter daily, this module reinforced the fact of optimizing them for better UX.

The Assessment Exam

The certification is FREE of cost and has to be attempted at the Academy for Ads learning portal by Google. If you prefer video study materials, this portal has optional videos for preparation. The detailed assessment guide for reading is available in Google Support section (link).

Mobile Sites Assessment-course

  • Questions: The assessment is made up of 65 questions
  • Time limit: You’ll have 90 minutes to complete the assessment
  • Passing score: You need to get a score of 80% or higher to pass
  • Retake period: If you don’t pass the assessment, you can take it again after 1 day
  • Available languages: simplified Chinese, traditional Chinese, Dutch, English (UK), English (US), French, German, Italian, Japanese, Korean, Polish, Portuguese, Portuguese (Brazil), Russian, Spanish, Spanish (Latin America), Thai, Turkish, and Vietnamese

The result is shared immediately and the certificate is provided at the same time, if you passed.

Mobile Sites Assessment

All the best for the exam and happy optimizing mobile sites!

The A/B Testing Culture and Process

In the previous post of this series, you got introduced to what A/B testing is. Before we deep dive into the A/B testing, It is important to understand few factors to be considered for successful experiments.

In this post, you will understand about the culture needed to encourage testing and an intro to the process of A/B testing. The key to run an A/B test is to foster the culture of experimenting and to discipline a process to test.

Fostering the Culture

Experimenting and executing tests needs a culture that encourages it. In a talk (video) by Hazjier, Global Head of Strategy at Optimizely, he measures this culture on a scale of “Freedom”. This refers to the level flexibility and liberty teams have to experiment. The following image explains 3 different levels of freedom.

Scale of Freedom to Test

While the levels of freedom cannot be compared because it depends on the company policies and processes, it influences the number and type of tests that can be tried.

He quotes , a travel company we are familiar with, as an example for the high level of freedom. It tested the brand names “booking” and “” to decide the better converting name!


It should test and solve your real problems. A nice example is highlighted in the talk quoted above. A shirt brand tested a male model with different level of beards to be featured on the website.


The Beard 6 variant drove more than twice the conversions by the Beard 1 variant. However, this result cannot be applied across the website as it might not become interesting and users may not click on them. Hence, the problems or hypothesis you test must be prioritized based on the impact of its result.

The Process

The A/B testing has to be run as a scientific process. The results needs to be statistically concluded. The statistical significance makes sure the results are fair covering all scenarios like null hypothesis and the factors affecting users browsing behavior.

The A/B testing process involves the following 6 steps. This is a common framework that can be adapted and modified with additional steps if needed.

A/B Testing Process Iteration

Every step in the process requires certain tools, team work and thought process. Each of these steps will be detailed out in the forthcoming blogs of this series.

Introduction to A/B Testing

What is A/B Testing?

A/B testing is comparing two versions of a web page, button, hero image, newsletter or any component and compare which performs better. The decision is made using goals to compare against each other. The variation with better goal conversion wins.

The “Learn more” button is tested with two variations. Image Reference: link

Multivariate testing is the process of testing more than 2 variations of the component. This blog by Kissmetrics is an interesting post on A/B and Multivariate test – blog.

Conversion Metrics

The conversion can differ between websites based on the purpose of the website. Examples:

  • Sign-Ups to newsletter for a publisher
  • Purchase for e-commerce
  • Outbound click to the target site for an affiliate
  • Time on site for publisher
  • Form submission for lead generators

Components to test

While the goals is very important to decide the winner, the component that will be tested is also equally important.


Facebook tested the message in social ads to make one “like” a page. Reference credits: link

Given the capabilities of tools in market, components like the following can be easily tested:

  • Hero Images on home page or landing pages
  • Call to action buttons
  • Form elements (form length)
  • Menu options
  • Text in the titles, paragraph headings, the paragraph content etc.,
  • Deals shown to users
  • Newsletter email subject and content
  • The price tiers and messaging for subscription or a product

This post is kept to be a simple intro to what an A/B testing is. This will be followed by posts on the A/B testing process, Implementing the test, Stats and factors involved in deciding the winner and few case studies from prominent A/B testing tools in the market.