どうも、セクションナイン の 吉田真吾（@yoshidashingo）です。
IAMポリシーのサービスアクションやその履歴は以下の粒度で管理されているので、API GatewayとかService catalogなどは知らないとハマる（該当項目見つからない→別項目でした、みたいな）可能性があるのでメモ書き。全部で72サービスですってよ。
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