This is a real story of how we implemented Shift Left by influencing, mindset change, creating champions and with the help of technology at Expedia Group.

In every software company in the world, at the nucleus of it, all we are trying to do is, take a code change and move it to production, faster with quality. There couldn't be any disagreement over this!

Sometimes when we repeatedly follow a practice, even when there are new better alternatives, it is difficult to change our mindset because we think "Why change? it is working".  Moving your pipelines to follow Shift Left is one of them.

In US alone, $113B is spent annually on identifying and fixing production defects!

Shift Left not only increases developer productivity, but allows you to go to production faster, more frequently and reduce production incidents. End of the day, it makes both developers and customers happy!

The biggest frustrations for developers in a team is, CI/CD pipeline being blocked and no one can merge their PR, everyone has to wait for it to be fixed and pipeline becomes green again. And as all the validation and verifications happening to the right side of the pipeline, it is going to take more time to fix issues as well, involving many engineers, because the failure could have been caused by any code change. This is true, especially when an issue happens in production, not only everyone has to be involved to figure out the problem, but there is going to be lot of unhappy customers and loss of revenue.

What if you have something where pipeline blockage is not possible. What if you can can run the same set of checks you run in main pipeline but you run them against your branch itself and when you merge your PR, it is already 'production ready', what if every PR can go to production directly? what if you have a mechanism where it actually reduces production incidents ?

Welcome to Shift Left!


Outline/Structure of the Case Study

Presentation : 35mins

Key ingredient of CICD Pipeline (2mins)

Problem Definition (7mins)

Why Shift Left

Regular Pipeline


How a developer cycle looks like?

5 different teams' PR stats for 1 year

Shift Left Pipeline Big Picture (3mins)

Advantages (12mins)

Key Stats

Implementation Details

How to implement Shift Left?

Container Orchestration Platforms

Github Actions / Jenkins

Github Actions work flow

Micro-services and Shift Left (2min)

Return on Investment (3min)


Reduction in Revenue Loss

How to cost optimise Shift Left? (2min)

Canary vs Shift Left (1min)

Best Practices (3min)

Q &A = 10mins

Learning Outcome

Whether you know this concept or not, after this presentation, you will have a clear idea on not just how to implement Shift Left, but how to make the mindset change within a team by creating change agent champions and successfully implement it.

Target Audience

Everyone in a software engineering team

Prerequisites for Attendees

Understand general CI/CD pipeline


schedule Submitted 10 months ago

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    Robin Gupta
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  • Eran Kinsbruner

    Eran Kinsbruner - Comparing Selenium 4, Cypress and Playwright Frameworks

    Eran Kinsbruner
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    schedule 11 months ago
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    45 Mins

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  • Divya Cheekati

    Divya Cheekati / Kavitha Bellam Konda - RPA using Power Automate Desktop Tool >> Changed our Automation Perspective from Complex code to Simple flows

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