Slack's transition to remote development environments has significantly boosted developer productivity and collaboration. The shift solved challenges around consistency and onboarding, reducing setup times for new developers, OS compatibility issues, and performance problems. Remote development environments were provisioned using existing tools, automated environment provisioning, ephemeral workspaces, and production parity. This solution dramatically reduced friction for developers, allowing them to focus on coding. As the remote development solution evolved, user feedback drove improvement, flexibility was key, performance mattered, and IDE integration was critical. Despite challenges, the transition has been overwhelmingly positive, with an adoption rate of 80-85% and consistent positive feedback from developers. The future direction includes exploring new technologies like Nix and Kubernetes to enhance the offering while maintaining consistency across infrastructure. Key lessons learned include investing in a great developer experience, planning for offline scenarios, prioritizing security, optimizing performance, providing flexibility, and being prepared to iterate based on feedback.