How to Audit Cloud Spend When You Inherit a New Environment

Auditing cloud spend in an inherited AWS, Azure, or Google Cloud environment requires a data-first approach because resource purpose, ownership, and cost baselines are often unclear. The recommended process begins with comparing historical billing periods and inventorying deployed resources, utilization, infrastructure-as-code definitions, and deployment pipelines before matching resources to billable line items. It then emphasizes improving tags and cost allocation to identify responsible teams, checking for configuration drift and unmanaged infrastructure, and investigating orphaned resources such as detached disks, unused IP addresses, stale snapshots, and idle services without deleting them prematurely. Organizations should right-size resources based on measured usage while accounting for legitimate needs such as disaster recovery, document inherited reservations and subscriptions, and prioritize changes that reduce costs without disrupting critical workloads. Ongoing governance—including consistent tagging, recurring audits, drift detection, FinOps tooling, and pull-request cost estimates and policies—can help prevent waste from returning, while platforms such as Spacelift are presented as tools for automating infrastructure management, policy enforcement, and cost visibility.

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