Replit brings structure, speed, and better decision-making to incident response with Rootly.

When incidents lived in one Slack channel, things got noisy fast.

In Replit’s early days, incident management happened in a single Slack channel. That worked until multiple issues were unfolding at once. Conversations overlapped, context got mixed together, and it became harder to tell which update belonged to which incident. Threads helped somewhat, but they did not scale well and made coordination harder to follow in real time.  

To improve the situation, the team built an internal Slack bot. It could create an incident record in Replit, pull messages into a timeline, and generate a large Slack message at the end for someone to copy into a markdown doc. But the system had two major weaknesses: it depended on Replit’s own infrastructure, which made it vulnerable during severe outages, and it had no clear owner, so maintenance and improvements happened ad hoc.

“Once more than one incident was active, the old setup started working against us. We needed a system that kept people in Slack but made the process structured and dependable.” -Matthew Iselin, Engineering Manager - SRE, Security, Replit

Replit wanted to stay in Slack, not bounce between tools.

Slack was already the center of operations for Replit, so the goal was never to replace it. The goal was to make incident response inside Slack more structured, more reliable, and less dependent on manual effort.

That is where Rootly stood out. Replit specifically called out Rootly’s Slack integration as a differentiator, especially compared with tools that still required responders to jump back and forth between Slack and a separate web UI during an incident. Replit also highlighted Rootly’s Linear integration, saying the bidirectional sync made it much easier to keep action items organized and tracked.

“We were committed to running incidents in Slack. Rootly gave us the structure and automation we were missing, without forcing responders into another tool when time mattered most.” -Matthew Iselin, Engineering Manager - SRE, Security, Replit

Better incident data led to better business decisions.

For Replit, Rootly’s value is not limited to faster response during an incident. It also changes what leadership can learn afterward.

Matthew Iselin says Rootly makes it simple to get an overview of system health and past incidents, including not just incident volume, but also causes and impacted services. That matters because he leads SRE and Security and is not always directly involved in every incident. With Rootly, he can quickly understand patterns across incidents and use that information to decide where Replit should invest in infrastructure and security. Before Rootly, that level of tracking and analysis would have taken significant manual effort.  

This is the strategic leap in the Replit story: Rootly did not just improve incident coordination. It turned incident data into a decision-making asset for engineering leadership.  

“Rootly doesn’t just help us run incidents better. It helps us understand where the system is under pressure so we can make better investment decisions afterward.” -Matthew Iselin, Engineering Manager - SRE, Security, Replit

A better responder experience means less toil and less context switching.

Replit also cared deeply about the human side of incident response. The team did not want responders slowed down by repetitive admin, tool switching, or process overhead.

On the current case study page, Replit says Rootly automates tasks that used to be time-intensive, including pulling and formatting the incident timeline and building a retrospective document. The team also points to smaller workflow wins that add up: a consistent way to track the incident commander and other roles, plus automated escalation paths.  

Replit’s view is practical: when a step belongs in every incident, it should be codified once in the workflow instead of retrained manually every time. That reduces toil, improves consistency, and helps new team members ramp faster because they learn inside a system that already reflects the company’s incident response process.

Rootly gave Replit a foundation it could grow on.

Replit notes that one advantage of adopting Rootly early was that newer team members have effectively “grown up” with it. That matters because incident maturity compounds. Instead of teaching a loose set of best practices, Replit can onboard engineers into a system that already encodes how incidents should run.  

The result is a more scalable response model: one that improves responder experience in the moment, gives leaders better visibility afterward, and creates a stronger operational foundation as the company grows.  

Quick fire round: Replit rates Rootly

• 5/5: Implementation speed
• 5/5: Slack experience
• 5/5: Workflow automation
  
• 5/5: Reporting and insights
• 5/5: Responder experience

Rootly fit the way Replit already worked, especially in Slack, while adding the structure, integrations, and reporting the team needed to mature incident response without adding more operational burden. This is grounded in Replit’s public comments about Slack, Linear, timelines, retrospectives, and incident metrics.