0142 GMT February 20, 2020
A considerable to-do list includes addressing India's lackluster economic growth and reducing unemployment, as well as fixing a stricken agriculture sector on which 70 percent of households depend, AFP wrote.
Modi's Hindu nationalist Bharatiya Janata Party (BJP) was projected to sweep 303 seats in Parliament, giving it an even bigger majority than five years ago and defying predictions of a dip.
The main opposition Congress party, which has ruled the roost in India for much of its post-independence history, improved on its historic low five years ago of 44 seats but still only managed a paltry 52.
Congress chief, Rahul Gandhi, even lost his own seat in Amethi, long a family bastion. He did win a seat in the southern state of Kerala, however, a quirk allowed under Indian election rules.
Chinese President Xi Jinping, meanwhile, joined a chorus of international well-wishers, with even Pakistan's Imran Khan tweeting congratulations.
On Thursday there were delirious scenes at BJP party offices across the nation of 1.3 billion people, including its headquarters where Modi was showered with petals by chanting fans.
"The voting numbers in India's election is the biggest event in the history of (the) democratic world. The entire world has to recognize the democratic strength of India," Modi told cheering crowds.
"Modi will make India great again. Modi is the strongest prime minister India has ever had and will get. We need to support his policies to prosper," said one supporter, Santosh Joshi.
Modi, 68, conferred with party allies on Friday ahead of a cabinet meeting later in the day.
'Can Modi deliver?'
With the election behind him, Modi must now tackle the economy and unemployment – notably among women, who have one of the lowest labor market participation rates in the world.
"The real question is can Modi deliver on his economic commitments – for example creating the high number of jobs needed?" said Champa Patel, of the Chatham House think tank.
"This is essential to address India's growing wealth inequalities. Can he address the challenges that millions of Indians face on a daily basis in a highly stratified country?"
India's agriculture industry is also in a dire state with drought, low prices and debt driving thousands of farmers to suicide in recent years.
The country's waterways are filthy and India is home to 22 of the world's 30 most polluted cities, killing 1.24 million people early in 2017 according to a Lancet Planetary Health study.
Modi and the Hindu nationalist BJP must also try to heal divisions which have left religious minorities feeling anxious for the future.
During the campaign he managed to deflect criticism on these issues by focusing on national security, claiming he alone could defend India.
Congress meanwhile was picking up the pieces after the second election debacle in a row, having failed to win a single seat in 13 states and five union territories.
These included Rajasthan where it won state elections late last year. This time the BJP swept all 25 seats, and in Uttar Pradesh Congress took just one constituency.
An anti-Modi alliance in Uttar Pradesh, India's most populous state with 200 million people, also failed to prevent the BJP juggernaut sweeping 64 out of 80 seats.
Even in West Bengal, run by formidable Modi critic Mamata Banerjee, the BJP made major inroads, boosting its seat tally from two to 18.