Amazon stock: AWS sets new AgentCore runtime as default

Amazon.com Inc. added a new cloud product signal on Thursday, November 12, when Amazon Web Services made its next-generation AgentCore Runtime the default for new runtimes in a broad group of regions. The announcement came from AWS.

AgentCore targets lower idle costs

The new runtime restores sessions from snapshots of initialized agents, scales compute and memory with the workload and reduces resources when agents are idle. AWS said the runtime operates each session in a hardware-isolated Firecracker microVM.

For a 2 GB image, sessions start in under two seconds at the 75th percentile, compared with 29.7 seconds for the previous generation. AWS also said idle agents can scale to zero and that multi-turn sessions can use up to 68 percent less billed memory.

Regional rollout supports adoption

The new default applies across regions including Northern Virginia, Ohio, Oregon, Frankfurt, Ireland, London, Tokyo, Seoul and Sydney. Existing runtimes remain on the current version until customers move them, while operators can select the earlier version through the platform setting.

For investors, the announcement shows how Amazon is extending AWS infrastructure into agent-based workloads. The commercial impact will depend on customer adoption, usage intensity and the pace at which new artificial intelligence applications move into production.

Amazon stock traded at 240.45 euros on Lang & Schwarz at 11:00 CET on Saturday, November 14.

Broader US market developments are covered in Current market reports.

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