# Recommendations Engine

> The recommendations engine now uses a 90-day utilization baseline, up from 14 days, giving much more stable rightsizing signals. Every recommendation ships with a confidence score and estimated payback timeline. One-click rightsizing for EC2 and RDS is now available for all accounts with sufficient permissions.

Source: https://zop.dev/changelog/v2026-01
Published: 2026-01-06 · Tags: zopnight, rightsizing, ec2, rds

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90-day rightsizing baseline

## New

- 90-day utilization baseline for all rightsizing recommendations (previously 14-day)
- Confidence scoring: High/Medium/Low confidence ratings on every recommendation
- One-click rightsizing: apply EC2 and RDS instance type changes directly from ZopNight

## Improved

- Recommendations now respect application-tier tags to avoid downsizing production services

## Fixed

- RDS recommendations no longer suggest instance families unavailable in the target region