What are you hosting and who are your users? Do you receive any legitimate traffic from AWS or other cloud provider IP addresses? There will always be edge cases like people hosting VPN exit nodes on a VPS etc, but if its a tiny portion of your legitimate traffic I would consider blocking all incoming traffic from cloud providers and then whitelisting any that make sense like search engine crawlers if necessary.
What are you hosting and who are your users? Do you receive any legitimate traffic from AWS or other cloud provider IP addresses? There will always be edge cases like people hosting VPN exit nodes on a VPS etc, but if its a tiny portion of your legitimate traffic I would consider blocking all incoming traffic from cloud providers and then whitelisting any that make sense like search engine crawlers if necessary.