# Executions An Execution is the record of a single run of a Pipeline. It contains all the information about that run - when it was run, who ran it, what data was produced etc. Nextflow pipeline runs consist of a series of invidual processes, which run in their own self contained environment and have their own inputs and outputs. These are chained together to form the entire pipeline execution. You can see all the processes that executed within an Execution (or watch them running live if the run is ongoing). You can also see all the Data that is produced. Executions and Data together form a network, with Data nodes feeding into Execution nodes, which themselves produce more Data nodes. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.imaps.goodwright.com/fundamentals/executions.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.