How a 6‑Month UI Overhaul Transformed a Million‑User Cloud Design Tool

In the internet era, user experience is crucial for product success. This case study describes the 6‑month “Top‑Bottom Bar Framework Optimization” project for the KuJiale cloud design tool, which serves millions of users across home and real‑estate sectors.

Before the upgrade, the toolbar suffered from inconsistent exit points, overlapping functions, unclear menu categories, and poor layout on small screens.

After the redesign, new icons and clearer classifications were added, functions were organized, and overlapping issues were resolved, making the toolbar intuitive.

The project highlighted hidden risks such as large‑scale impact (the “butterfly effect”), potential user habit disruption leading to churn, and the need for a one‑time full‑framework release.

To mitigate these, the team adopted a data‑driven approach: setting tracking points to collect user behavior, monitoring real‑time usage, and adjusting rollout based on analytics.

They employed a dual‑branch, staged rollout strategy, gradually migrating users from the main branch to the upgraded toolbar in batches, while maintaining communication with customers through targeted notifications and in‑toolbar guidance.

Extensive expert reviews and user beta testing involving over 200 participants ensured functional stability before full release.

The project concluded successfully: millions of users transitioned smoothly, over 20 business units launched changes without critical defects, and key usage metrics showed improvement.

Key takeaways emphasize the importance of data‑backed decision making, full‑link user experience monitoring, sustainable framework design, and proactive customer communication.