16:T4c3,flowchart LR subgraph External Data Sources DataLake["Data Lake (S3)"] StreamingPlatform["Streaming Platform (Kinesis)"] OLTPDB["OLTP DB"] end subgraph Ingestion Services BatchIngestion["Batch Ingestion (AWS Glue)"] StreamIngestion["Stream Ingestion (Kinesis Data Analytics)"] end subgraph Core Services IngestionServiceAPI["Ingestion Service API"] FeatureServing["Feature Serving Service"] FeatureCatalog["Feature Catalog & Metadata Service"] end subgraph Data Stores OfflineStore["Offline Store (S3/Parquet)"] OnlineStore["Online Store (DynamoDB)"] end DataLake --> BatchIngestion StreamingPlatform --> StreamIngestion OLTPDB --> StreamIngestion BatchIngestion --> IngestionServiceAPI StreamIngestion --> IngestionServiceAPI IngestionServiceAPI --> OfflineStore IngestionServiceAPI --> OnlineStore OfflineStore <--> FeatureServing OnlineStore <--> FeatureServing FeatureServing --> MLModels["ML Models"] FeatureCatalog <--> IngestionServiceAPI FeatureCatalog <--> FeatureServing FeatureCatalog <--> OfflineStore FeatureCatalog <--> OnlineStore17:T51a,flowchart LR subgraph External Data Sources DataLake["Data Lake (S3)"] StreamingPlatform["Streaming Platform (Kinesis)"] OLTPDB["OLTP DB"] end subgraph Feature Engineering BatchTransformation["Batch Transformation (AWS Glue)"] StreamTransformation["Stream Transformation (Kinesis Data Analytics)"] end subgraph Ingestion Services IngestionServiceAPI["Ingestion Service API"] end subgraph Core Services FeatureServing["Feature Serving Service"] FeatureCatalog["Feature Catalog & Metadata Service"] end subgraph Data Stores OfflineStore["Offline Store (S3/Parquet)"] OnlineStore["Online Store (DynamoDB)"] end DataLake --> BatchTransformation StreamingPlatform --> StreamTransformation OLTPDB --> StreamTransformation BatchTransformation --> IngestionServiceAPI StreamTransformation --> IngestionServiceAPI IngestionServiceAPI --> OfflineStore IngestionServiceAPI --> OnlineStore OfflineStore <--> FeatureServing OnlineStore <--> FeatureServing FeatureServing --> MLModels["ML Models"] FeatureCatalog <--> IngestionServiceAPI FeatureCatalog <--> FeatureServing FeatureCatalog <--> OfflineStore FeatureCatalog <--> OnlineStore18:T5ec,