The phrase "to build the pipeline" means to create a system or process that allows for the efficient flow or transfer of something, like information, resources, or services. Full definition
So we're focused on building the pipeline of those people who can drive transformational change by designing and building systems of great schools that provide all students with an exceptional education. (educationnext.org)
They were able to show exactly how many jobs were involved in building the pipeline and that if you looked at the broader economic picture, the pipeline was a negative job creator. (nrdc.org)
The Conservative government's strategy to strengthen potential economic growth has been built entirely on building pipelines, and false «hope», and we know where this has got us. (3dpolicy.ca)