"The cabinet must convey all decisions to the Lieutenant Governor but his concurrence is not required in all matters," the court said, making it clear that the Lt Governor is not the boss.

The top court emphasized that except for anything related to land, police and public order, the Lt Governor has no independent decision-making powers under the constitution.

"The Lt Governor is not the governor but an administrator in a limited sense. He is bound by the advice of cabinet advice in matters other than those exempted," the court said.

Reading out the verdict, Chief Justice of India Dipak Misra said the Lt Governor needs to work harmoniously with the Delhi government.

In 2016, AAP went to the Supreme Court against the High Court's order that the Lt Governor is the administrative boss of Delhi. The top court, disagreeing with the high court on Wednesday, said the Lt Governor "should not act in a mechanical manner and stall decisions of the Delhi cabinet".

"Now we don't have to get every file or decision cleared by the Lt Governor," said deputy Chief Minister Manish Sisodia, wasting no time in ordering work on stalled decisions like the doorstep delivery of around 100 services.

Supreme Court's landmark verdict comes days after Mr Kejriwal spent nine days protesting in a visitors' room at Lt Governor Anil Baijal's house to get his attention after a series of run-ins.

AAP wanted Mr Baijal to step in and end an officers' boycott that started after Delhi's top bureaucrat, Chief Secretary Anshu Prakash, alleged in February that he had been attacked by AAP lawmakers at a late night meeting at Mr Kejriwal's home.

After the officers agreed to talks, Mr Kejriwal ended the protest but started a signature campaign for full statehood for Delhi, a demand that was pushed by the BJP until it took power at the centre.