====== Why backend leaks kill long-term ROI ======

===== The invisible drain =====

Most marketers watch the front end closely.

Clicks.
Conversions.
Cost per acquisition.
Day-one ROAS.

Meanwhile, the backend quietly leaks.

These leaks rarely show up immediately.

CBSplit was built to surface them before they destroy long-term ROI.

===== What backend leaks actually are =====

Backend leaks are not always obvious failures.

They include:

  
  * High refund rates
  * Retry-dependent approvals
  * Subscription churn
  * Failed rebills
  * Silent payment declines
  * Chargeback exposure

Each leak may seem small in isolation.

Together, they erode profitability over time.

===== ROI is calculated early, damage happens later =====

ROI is often calculated using:

  
  * Initial revenue
  * Blended EPC
  * Early conversion metrics

Backend leaks occur after:

  
  * Fulfillment
  * Customer experience
  * Billing cycles
  * Support interactions

By the time backend damage is visible, scaling decisions have already been made.

CBSplit recalculates ROI after outcomes settle.

===== Refund leaks distort LTV projections =====

Refund-heavy funnels inflate early revenue.

They reduce:

  
  * Net earnings
  * Cohort stability
  * Long-term margin
  * Processor trust

Short-term ROI looks healthy.

Long-term ROI collapses.

CBSplit adjusts projections using refund-adjusted revenue.

===== Rebill leaks compound silently =====

Subscription funnels rely on rebills.

Backend leaks include:

  
  * Failed rebills
  * Grace-period churn
  * Card expiration losses
  * Payment friction

Each missed rebill reduces lifetime value.

Compounded across cohorts, the impact is significant.

CBSplit tracks subscription durability over time.

===== Retry leaks increase fragility =====

Heavy retry reliance:

  
  * Masks front-end weakness
  * Increases processor scrutiny
  * Creates unstable revenue patterns

Revenue that depends on repeated recovery attempts is fragile.

CBSplit distinguishes clean revenue from recovery-driven revenue.

===== Backend leaks distort scaling decisions =====

When backend health is ignored:

  
  * Traffic is scaled prematurely
  * Budgets are increased too aggressively
  * Risk accumulates silently
  * Processor thresholds are approached unknowingly

Scaling amplifies leaks.

CBSplit ensures backend stability before expansion.

===== Aggregated dashboards hide backend damage =====

Traditional dashboards blend performance.

They smooth over:

  
  * Cohort differences
  * Segment-level refund clusters
  * Traffic-specific churn
  * Payment behavior patterns

Blended averages mask backend erosion.

CBSplit preserves granularity to expose it.

===== Long-term ROI depends on backend integrity =====

True long-term ROI requires:

  
  * Refund containment
  * Rebill stability
  * Clean approvals
  * Durable customer alignment

Front-end performance alone cannot sustain growth.

CBSplit aligns ROI measurement with backend truth.