Unfortunately, without a transcript or video recording, I am unable to provide a detailed summary of the AWS re:Invent 2025 presentation on "Integration patterns for distributed systems (API315)". The request specifies that no transcript is available for this video. As an AI assistant, I do not have the capability to generate a comprehensive summary without access to the actual content being presented. I apologize that I cannot fulfill this request, as a detailed summary requires the source material to analyze and synthesize the key information. Please let me know if you are able to provide the video or transcript, and I would be happy to generate a detailed Markdown summary for you.