Cloud Foundry has had buildpacks for 6 years or so, initially soft forks of Heroku buildpacks (I worked on these for some time). The standardisation came about

Cloud Foundry has had buildpacks for 6 years or so, initially soft forks of Heroku buildpacks (I worked on these for some time). The standardisation came about because Heroku and Cloud Foundry folks teamed up. In terms of your specific question: pack is a CLI tool for using buildpacks to generate images. Paketo is a supported collection of such buildpacks. An analogy might be that pack is a compiler, Paketo is a standard library.