Thirty-five-year-old Noboa, a surprise qualifier for the run-off in the early election, has pledged to improve the economy and create jobs for young people, as well as to house dangerous criminals on prison ships.
"Tomorrow we start work for this new Ecuador, we start working to rebuild a country seriously battered by violence, by corruption and by hate," Noboa told supporters during brief remarks in the seaside town of Olon.
"From tomorrow Daniel Noboa starts work as your new president," he added, Reuters reported.
Ecuador has all the elements needed to be a global example of progress, Noboa has said. He will have just 17 months to govern, serving a truncated term from December this year until May 2025.
MNA/PR