The phrase "ambitious program" means a plan or project that aims to achieve a challenging or difficult goal. It implies that the program requires a lot of effort, resources, and planning to be successful. Full definition
Last year, we had several hundred participants from over forty countries and we are working to have a most ambitious program this year. (legalblogwatch.typepad.com)
A greatly enlarged general endowment provided increased, more stable funding, allowing the staff to undertake ambitious programs and exhibitions with national and even international impact. (markmooregalleryblog.com)
The gallery's focus is to present a diverse and ambitious program emphasizing museum - quality, installation - based exhibitions. (galleriesnow.net)