[1] He is active in keeping the legacy of his grandfather alive, and introducing Nelson Mandela to a younger generation.

[4][5][6] He is the longest serving global ambassador for UNAIDS, a specialized agency of the United Nations that campaigns to end the HIV/AIDS epidemic.

His grandfather Nelson was both a direct descendant of the holders of the kingship of the Thembu people and heir to the chieftaincy of Mvezo in his own right.

Ndaba says his foundation aims to publicise a positive image of Africa through programming, films, media and social interaction, to change the mindset of young Africans and the world at large.

[12] He published his first book in June 2018 titled Going to the Mountain: Life Lessons from My Grandfather, Nelson Mandela.

[4] In 2018 Ndaba partnered with Prince Harry, and Sir Elton John to launch a campaign to raise awareness about HIV and AIDS.

[13] In an interview with the Hill at the Library of Congress, June 2018, Ndaba is quoted as saying why he wrote the book, “I wanted people to know Nelson Mandela outside of being a statesman, outside of being this great iconic leader that they know and just to know him at the human level as a granddad."