The phrase "immediate download" means that you can get something you want to save or use right away by directly receiving it electronically, without having to wait or go through a physical process. Full definition
After you pass the final exam, your certificate of completion will be available for immediate download as a PDF. (easyadi.com)
Each week for a limited time only during the summer, choose from approximately 10 free eBooks, all available for immediate download at no cost. (blog.the-ebook-reader.com)
Your certificate of completion will be available for immediate download after you successfully complete all course work and the final exam. (easyadi.com)