> Markdown version of [/videos/598-why-shifting-left-is-so-important-for-software-developers?t=1289](https://www.wearedevelopers.com/videos/598-why-shifting-left-is-so-important-for-software-developers?t=1289). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Why shifting left is so important for software developers

Tired of reactive production firefighting? Discover how shifting left and integrating active observability directly into your IDE catches vulnerabilities before they ever reach your users.

- **Speakers:** [Jemiah Sius](https://www.wearedevelopers.com/@jemiah-sius)
- **Event:** World Congress 2023
- **Published:** August 11, 2023
- **Duration:** 41:51
- **URL:** https://www.wearedevelopers.com/videos/598-why-shifting-left-is-so-important-for-software-developers

## Summary

"Shifting left" transforms the software development lifecycle (SDLC) by addressing security, performance, and reliability earlier in the engineering process rather than reacting to production failures. Rather than clashing with agile methodologies or reverting to waterfall workflows, this proactive approach complements continuous delivery by significantly reducing reactive firefighting. Developers are encouraged to adopt a "you build it, you own it" mindset, emphasizing early-stage testing, robust planning, and cross-functional feedback to preempt complex bugs and structural vulnerabilities before they reach users.

A critical enabler of this cultural shift is bringing active observability and structural tooling directly into the developer workflow. Integrating performance metrics and security insights into IDEs—such as through extensions like CodeStream—allows engineers to spot latency spikes, pipeline failures, and throughput issues right alongside their stack traces. This localized visibility minimizes context switching and provides immediate, codebase-level context for debugging. Observability effectively acts as a real-time dashboard for application health, guiding architectural and code-level decisions without waiting for user-reported errors.

To effectively shift left, organizations must prioritize comprehensive automation and continually cultivate a DevSecOps culture. Best practices span from automating deployment pipelines and writing integration tests sooner, to implementing automated vulnerability assessments before staging. To offset the perceived overhead of additional test coverage, engineering teams can leverage generative AI tools to assist with unit test generation and scaffolding. This establishes a sustainable, cyclical feedback loop that continuously prioritizes long-term software quality over shipping unrefined features.

**Keywords:** shift-left development, software development lifecycle, devsecops culture, software observability, ide development integrations, performance bottlenecks, application security testing, deployment pipeline automation, continuous testing implementation, software vulnerability assessments, production environment debugging, agile software delivery, unit test generation, developer context switching, new relic codestream, open telemetry practices

## Chapters

1. **Conference introduction and the importance of early planning** (00:00) — Planning upfront and considering accessibility saves time and prevents complex code cleanup.
1. **Defining shift left in modern software development** (06:55) — Moving performance, security, and reliability concerns to earlier stages of development reduces system errors.
1. **Understanding observability through a practical dashboard analogy** (10:57) — Observability provides real-time system performance insights without requiring manual investigation.
1. **Incorporating observability and security in the planning phase** (11:52) — Gathering comprehensive requirements and defining necessary telemetry and security protocols early prevents architectural flaws.
1. **Bringing security and telemetry directly into the developer workflow** (12:43) — Integrating observability data and vulnerability scanning directly into the integrated development environment streamlines code construction.
1. **Automating security and performance evaluations during the testing phase** (15:49) — Leveraging automation frameworks to execute vulnerability assessments and performance validation prevents production issues.
1. **Securing and monitoring continuous integration and deployment pipelines** (16:58) — Automating deployment steps and maintaining secured configurations ensures reliable incremental releases.
1. **Establishing feedback loops for production monitoring and analysis** (17:54) — Using production telemetry and security logs guides proactive issue resolution and feature prioritization.
1. **Embracing a continuous learning and automation mindset for DevSecOps** (19:29) — Adopting shared responsibilities and continuous automation practices builds resilient and secure applications.
1. **Leveraging generative AI for application observability and security** (21:29) — Applying automated assistants to system telemetry simplifies troubleshooting and vulnerability resolution.
1. **Audience questions on agile integration and testing environments** (22:51) — Integrating early observability and telemetry aligns with agile delivery without reverting to waterfall methodologies.

## Related Moments

- [Embracing DevSecOps and automating the software development lifecycle](https://www.wearedevelopers.com/videos/351-maturity-assessment-for-technicians-or-how-i-learned-to-love-owasp-samm) (from "Maturity assessment for technicians or how I learned to love OWASP SAMM")
- [Shifting security left using the DevSecOps approach](https://www.wearedevelopers.com/videos/36-devsecops-security-in-devops) (from "DevSecOps: Security in DevOps")
- [Shifting left and creating internal security champion programs](https://www.wearedevelopers.com/videos/346-stranger-danger-your-java-attack-surface-just-got-bigger) (from "Stranger Danger: Your Java Attack Surface Just Got Bigger")
- [Expanding the shift left security journey](https://www.wearedevelopers.com/videos/936-real-world-threat-modeling) (from "Real-world Threat Modeling")
- [Integrating security into the DevOps lifecycle](https://www.wearedevelopers.com/videos/41-you-can-t-hack-what-you-can-t-see) (from "You can’t hack what you can’t see")
- [Rethinking shift left to avoid developer frustration](https://www.wearedevelopers.com/videos/1560-simple-steps-to-kill-devsec-without-giving-up-on-security) (from "Simple Steps to Kill DevSec without Giving Up on Security")

## Related Articles

- [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development)
- [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed)
- [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)
- [Exploring AI: Opportunities and Risks for Developers](https://www.wearedevelopers.com/magazine/522-exploring-ai-opportunities-and-risks-for-developers)

## Related Jobs

- [Tribe Lead - ( Software) Engineering Centre of Excllence](https://www.wearedevelopers.com/jobs/ext/1475530-tribe-lead-software-engineering-centre-of-excllence) at **SD Worx**
- [Engineer, Offensive Security Organization](https://www.wearedevelopers.com/jobs/ext/1992296-engineer-offensive-security-organization) at **Twilio**
- [Senior Engineer, Infrastructure Platform](https://www.wearedevelopers.com/jobs/ext/328836-senior-engineer-infrastructure-platform) at **Intercom, Inc.**
- [Senior Software Engineer, Enterprise Products](https://www.wearedevelopers.com/jobs/ext/1841248-senior-software-engineer-enterprise-products) at **GitHub**
- [Staff Developer Advocate, GitHub Security Lab](https://www.wearedevelopers.com/jobs/ext/1921051-staff-developer-advocate-github-security-lab) at **GitHub**
- [Senior Software Engineer,Billing](https://www.wearedevelopers.com/jobs/ext/1991843-senior-software-engineer-billing) at **GitHub**