Sunkara, R. 2026. Serverless Architecture Patterns for Enterprise AI Agents: ECS Fargate, OpenSearch k-NN, and DynamoDB for Knowledge-Grounded LLM Workflows. International Journal of AI, BigData, Computational and Management Studies. 7, 2 (May 2026), 197–201. DOI:https://doi.org/10.63282/3050-9416.IJAIBDCMS-V7I2P129.