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Amazon CloudFront now supports ECDSA certificates for HTTPS connections to viewers

Starting today, you can use Elliptic Curve Digital Signature Algorithm (ECDSA) P256 certificates to negotiate HTTPS connections between your viewers and Amazon CloudFront. As noted by NIST, ECDSA certificates can provide comparable security strength with smaller key sizes than RSA. As a result, conducting TLS handshakes with ECDSA certificates requires less networking and computing resources making them a good option for IoT devices that have limited storage and processing capabilities.

Source:: Amazon AWS