AWS Lambda now supports starting from a specific timestamp when using Amazon Managed Streaming for Apache Kafka (MSK) or Self-Managed Kafka as an event source. Previously, Kafka event source mappings could only have starting positions of trim horizon or latest. Now with starting from a timestamp, you can start processing messages at a precise point in time. This is useful for situations like Disaster Recovery, where you need a new consumer to quickly start processing where you previously left off.
Source:: Amazon AWS