Churn doubled from 2% to 4.5% month over month while support demand increased by 20%, indicating a likely customer-impacting issue emerging after the billing system migration. Step 1: CCA Protocol Analysis Clarity Over the last 30 days, customer retention performance has materially deteriorated. Monthly churn increased by 2.5 percentage points, representing more than a 100% relative increase compared with the previous period. At the same time, support tickets increased by 20%, suggesting that customers are experiencing friction, confusion, or operational issues. Given the recent migration to a new billing system, the most likely interpretation is that billing-related disruptions, incorrect charges, payment failures, account access issues, or workflow changes may be contributing to customer dissatisfaction and cancellations. Confidence Confidence score: 8/10. This interpretation has strong supporting signals because churn deterioration and increased support volume occurred during a major operational change. However, the analysis is based on aggregate metrics only. Missing data and assumptions include: No segmentation of churn by customer type, plan, industry, account size, or renewal stage. No breakdown of support tickets by category, severity, or billing-related topics. Assumption that the billing migration is temporally connected to the increase in churn and support volume. No confirmation of whether churn is voluntary cancellations, involuntary churn from failed payments, or contract non-renewals. Action Launch an immediate billing migration impact review: Analyze all churned accounts from the last 30 days and identify how many experienced billing errors, payment failures, invoice confusion, or migration-related issues before cancellation. Prioritize recovery outreach for high-value customers showing migration-related friction. Create a customer support escalation dashboard: Categorize the 20% increase in tickets by root cause, customer impact, and resolution time. Establish a daily review process between Customer Success, Support, and Billing teams until churn stabilizes. Execute proactive customer communication and retention outreach: Contact customers affected by billing changes with clear guidance, troubleshooting resources, and direct assistance. Provide Customer Success managers with a list of at-risk accounts based on recent support activity and engagement signals. Step 2: Quality Gate The recommended actions directly address the stated business context by focusing on the recent billing system migration as a potential operational driver of churn and increased support volume. The recommendations are designed to reduce customer impact, identify affected accounts, and prevent further avoidable cancellations without making disruptive product or pricing changes. The current metric data is sufficient for immediate low-risk investigation and mitigation actions, but additional data is required for a complete root cause confirmation. The top 2 missing data points needed are: Churned customer breakdown by reason code, account segment, and whether the customer interacted with billing-related support after the migration. Support ticket analysis showing the percentage of increased tickets directly related to billing migration issues, including ticket categories and resolution outcomes. Step 3: Executive Summary Over the last 30 days, churn increased from 2% to 4.5% MoM while support tickets rose by 20%, signaling a significant customer experience decline that requires immediate investigation. The recent billing system migration is the leading root cause hypothesis, with potential issues including payment failures, invoice confusion, account disruptions, or migration-related workflow problems. Customer Success should prioritize identifying affected accounts, reviewing churn drivers, and coordinating with Support and Billing teams to resolve recurring issues quickly. Immediate next actions are to analyze churned accounts, categorize support problems, and proactively engage at-risk customers to prevent additional churn.