Italian centre-left politician Matteo Renzi has been sworn in as the prime minister of the country at 39.
The Democratic Party leader is Italy's youngest-ever PM, reported BBC.
On Friday he formally accepted the mandate to lead a new government and named his cabinet.
He ousted Prime Minister and party colleague Enrico Letta in a vote earlier this month. Renzi said his coalition would give "hope" to the economically-stagnant country.
He has promised to overhaul the jobs market, the tax and education systems within four months.
Renzi came to prominence as mayor of Florence, but he has no experience of government at the national level.
Letta, who led Italy for just 10 months, was ousted in a vote called by Renzi at a party meeting on February 13. Renzi had argued that a change of government was needed to end "uncertainty".
He had accused Letta of a lack of action on improving the economic situation, with unemployment at its highest level in 40 years and the economy shrinking by 9% in seven years.
Letta was also accused of failing to implement promised reforms of what is seen as an often corrupt and wasteful bureaucracy.
