Salesforce - filtering by the last run time of a Pipeline

Hi,

I am trying to use the last run time of a pipeline to filter Salesforce records by comparing their last modified date with the pipelines last run and was wondering what the best course of action is. I’ve seen a couple of varying ideas on how to go about this. I tried storing the timestamp from the pipeline in a json file and then calling it later down the line but I’m having trouble getting it to work and it makes the pipeline big and bulky.

Thank you!