Overview

Amazon has introduced a new server‑less service called Selling Partner API Guard, which began its phased rollout in early 2024. The tool continuously scans an AWS account that hosts SP‑API integrations to verify that every resource complies with Amazon’s Data Protection Policy. For sellers, the service offers an automated way to spot configuration errors or data‑handling lapses before they trigger account suspensions or legal penalties.

Key Points

• Server‑less deployment — API Guard runs entirely on AWS Lambda, so sellers do not need to provision, patch, or scale any dedicated servers.
• Policy‑driven checks — The scans focus on the exact controls required by Amazon’s Data Protection Policy, such as encryption at rest, restricted access to sensitive data, and audit‑ready logging.
• Customizable rule set — Sellers can tailor the evaluation criteria by leveraging native AWS security services, allowing detection of risk patterns unique to their organization.
• Integrated alerting — Findings are automatically posted to AWS Security Hub and can fire CloudWatch events, enabling downstream automation or ticket creation.
• Continuous monitoring — Scans run on a user‑defined schedule, delivering ongoing compliance visibility instead of a single, point‑in‑time audit.

How Selling Partner API Guard Works

1. Asset inventory collection — The service calls AWS APIs such as IAM, S3, and KMS to build a catalogue of every resource that stores or processes SP‑API data. For instance, it might locate an S3 bucket called seller‑transactions‑2024 that contains order records.
2. Rule‑based assessment — Each listed asset is evaluated against a library of rules built with services like Amazon Macie for data classification, AWS Config for configuration compliance, and GuardDuty for threat detection. In the bucket example, a rule could verify that server‑side encryption is enabled and that the bucket policy does not grant public read permissions.
3. Result aggregation and notification — The outcomes of all rule checks are compiled into a compliance report and sent to AWS Security Hub. If any rule fails, a CloudWatch alarm is triggered, giving the seller an immediate signal to investigate or launch a Lambda‑based remediation script.