Guidance on when to use which products

Currently our documentation kind of split between mentalities of "we provide a grab bag of tools that you already know how to use" and "we provide this example to cover this one specific use case" (often trying to show off as much as possible of the platform).

We could do a much better job at helping users guide themselves to the right tools for their given use case. This is especially bad since we have multiple cases where multiple tools we provide have a decently wide overlap (Spark/NiFi/Airflow, Trino/Druid/HBase, HDFS/S3/Minio (which isn't part of our platform per se, but is part of many demos)).

未指定文件、测试或入口点；请先查看涵盖 Spark/NiFi/Airflow、Trino/Druid/HBase 和 HDFS/S3/Minio 的现有文档和示例。完成的标准是：尽管存在这些重叠，用户仍能针对给定的用例选择合适的工具。