What is the main purpose of a data pipeline?

Which of the following data pipeline processes keep the pipeline running smoothly?

Which of the following is the main reason to use Lambda architecture instead of Micro-batch, Streaming, or Batch data pipelines?

Which of the following data pipeline tools is specific to ELT?

There are always stages that are bottlenecks in the data flow of pipelines. Which of the following is a simple way to load balance pipelines?