The Linux Foundation is a non-profit consortium dedicated to supporting the growth and promotion of Linux, free software, and open-source technologies and is the official sponsor of the Linux creator Linus Torvalds.The Foundation provides the Linux and open-source communities with many high-quality services, most notably the online training and certification program provided by Linux community leaders and senior developers from open-source communities.As a promotion strategy and to expand the community of Linux experts, the Linux Foundation periodically offers massive discounts on this program.

Source: LXer – Linux Foundation offers up to 50% off on Linux certifications & bootcamps