THE PRODUCT PROBLEM
Slack's existing EC2 infrastructure model was becoming increasingly unsustainable, as the continuous updates to long-lived instances led to infrastructure drift and complicated service-level deployments. This complexity was compounded by the need for coordination across multiple layers, which hindered the agility and reliability of operations. The competitive landscape demanded a more modern approach to deployment, akin to what containers offered for certain workloads, but not all could transition smoothly. The business needed a solution that would enable Slack to maintain operational excellence while adopting modern deployment practices like immutability and automated safety, ensuring both scalability and stability.
THE DECISION
The decision to develop Shipyard was a strategic move to shift from a mutable infrastructure model to one where EC2 instances are treated as deployable artifacts. This transition required alignment across product management, engineering, and operations, as it fundamentally changed how infrastructure was managed and deployed. The tradeoff involved moving away from a familiar configuration management system to a new paradigm that emphasized build pipelines and automated safety. While this decision introduced initial complexity and required a cultural shift, it ultimately provided greater control and predictability over infrastructure updates. In hindsight, the decision was crucial for future-proofing Slack's infrastructure capabilities.
THE LESSON
This journey underscores the importance of PM and engineering collaboration in driving transformative infrastructure changes. It reveals that successful product evolution often involves rethinking foundational assumptions and being willing to embrace new paradigms, even if it means departing from established practices. The development of Shipyard highlights that PMs must not only facilitate alignment across teams but also champion the vision for long-term scalability and reliability. This case illustrates that the most impactful product decisions often require a willingness to challenge the status quo and invest in foundational shifts that align with future business needs.