Which Azure service should you use for the hot path?

You are planning a design pattern based on the Lambda architecture as shown in the exhibit.

Which Azure service should you use for the hot path?
A. Azure Databricks
B. Azure SQL Database
C. Azure Data Factory
D. Azure Database for PostgreSQL

Correct Answer: A
Explanation/Reference:
Explanation:
In Azure, all of the following data stores will meet the core requirements supporting real-time processing:
Apache Spark in Azure Databricks
Azure Stream Analytics
HDInsight with Spark Streaming
HDInsight with Storm
Azure Functions
Azure App Service WebJobs
Note: Lambda architectures use batch-processing, stream-processing, and a serving layer to minimize the latency involved in querying big data.

Reference:
https://azure.microsoft.com/en-us/blog/lambda-architecture-using-azure-cosmosdb-faster-performance-low-tco-low-devops/
https://docs.microsoft.com/en-us/azure/architecture/data-guide/technology-choices/stream-processing