AWS Cloud Financial Management

Mugdha Vartak

Author: Mugdha Vartak

Mugdha Vartak is a Senior Solutions Architect at Amazon Web Services, based in Chicago, IL. She works with Financial Services Industry customers, helping them design and implement well-architected solutions on AWS. Mugdha is passionate about helping organizations improve their cloud resilience, security posture, and cost efficiency - and enjoys enabling other architects to do the same at scale.

Implementing Proportional Reserved Instance and Savings Plans Chargeback with AWS Billing Conductor

When you use AWS Billing Conductor (ABC) to produce pro forma billing, you have full control over how costs are presented to your member accounts. By default, commitments purchased at the management account level are managed separately from ABC billing groups. Pro forma bills for your member accounts reflect on-demand equivalent costs. The good news is that ABC provides the flexibility to customize your pro forma billing to reflect these savings, which sometimes requires additional configuration beyond the default setup. In this post, we walk you through an automated pipeline that calculates the exact dollar savings each member account received from management-held RIs and SPs and injects those savings as proportional credit adjustments into ABC. This gives you an accurate, auditable chargeback number for every account, every month.