The Early Data (0-RTT) behavior now supports both QUIC-based traffic and Transmission Control Protocol (TCP).

The Early Data (0-RTT) behavior now only supports the QUIC protocol.

• New frozen rule format available for Property Manager users: v2024-10-21.
• The Origin Characteristics behavior is enhanced to support Object Delivery, Download Delivery, API Acceleration, Dynamic Site Acceleration, and Ion products.

The number of IPv4 CIDR blocks supported for use with this feature has changed.

• Updated the Property Version Information section in the Property Manager’s UI with the Security Options selection. You can choose from two security levels you apply in your edge certificate. Make sure this selection matches the network settings you configure while adding a hostname to your property.
• New Early Data (0-RTT) behavior. For users that have recently visited a site and are resuming a connection, Early Data allows browsers to send data to a server in the first round trip of a connection, without waiting for the TLS handshake to complete.
• New Enhanced Debug behavior that debugs requests that go through ​Akamai​ servers. It includes all the functionality provided by the existing Pragma debugging, but is more secure and provides additional information.
• New options in the Validate Entity Tag (ETag) behavior. You can now specify whether this behavior should support only strong ETag values, ignoring weak ETag and always returning a full response, or weak values should also be accepted.

Limited Availability release of the mTLS Edge Server to Origin behavior in Property Manager.

• New frozen rule format available for Property Manager users: v2024-08-13.
• You can now use the Request Method match criteria with Object Delivery.
• New Mutual TLS Origin Keystore behavior.
• New token authentication additions for DASH in the Segmented Media Protection behavior. You can specify to pass tokens in the query string.
• Optimizations to the Read Timeout behavior, including new First Byte Timeout option. For new Ion properties, Property Manager no longer adds the Read Timeout and Connect Timeout behaviors by default.

• New frozen rule format available for Property Manager users: v2024-05-31.
• TLS version 1.3 within the Origin Server behavior is now in General Availability. TLS version 1.3 offers significant improvements over earlier versions in both performance and security. See the Property Manager guide and PAPI documentation for more details.
• New PAPI rate limit to protect PAPI resources from being exhausted by single users. The limit specifies maximum sustainable number of request allowed each minute per account. PAPI also provides a burst limit that specifies how many requests you can make in excess of the imposed rate limit. For details, see Rate and resource limiting.

New Early Hints behavior supported for use with ​Akamai​'s Ion and Dynamic Site Accelerator products. With Early Hints, you can send an HTTP 103 status code with preliminary HTTP headers at the client request stage, so that a browser can preload critical website resources or preconnect to a specific domain while waiting for the final HTML response. You can configure this behavior in Property Manager or use EdgeWorkers to dynamically calculate the most optimal resources to send as Early Hints at the edge.

The FIPS mode - origin behavior ensures Federal Information Process Standards (FIPS) 140-2 compliance for a connection to an origin server.