The UN says new HIV infections and deaths from AIDS are decreasing, making it possible to control the epidemic by 2030 and eventually end it "in every region, in every country".
"More than ever before, there is hope that ending AIDS is possible. However, a business-as-usual approach or simply sustaining the AIDS response at its current pace cannot end the epidemic", the UNAIDS programme said in a global report issued ahead of a conference in Melbourne, Australia next week.
It said the number of people infected with HIV was stabilising at about 35 million worldwide. The epidemic has killed 39 million of the 78 million people infected since the 1980s.
The AIDS epidemic can be ended in every region, every country, in every location, in every population and every community
"The AIDS epidemic can be ended in every region, every country, in every location, in every population and every community," Michel Sidibe, the director of UNAIDS, said in the report.
"There are multiple reasons why there is hope and conviction about this goal."
The human immunodeficiency virus that causes AIDS can be transmitted via blood, breast milk and by semen during sex, but can be kept in check with cocktails of drugs known as antiretroviral therapy.
UNAIDS said that at the end of 2013, 12.9 million HIV-positive people had access to antiretrovirals - a dramatic improvement on the 10 million who were on treatment just one year earlier and the only five million who were getting drugs in 2010.
Since 2001, new HIV infections have fallen by 38 percent, it said. AIDS-related deaths have fallen by 35 percent since a peak in 2005.
"The world has witnessed extraordinary changes in the AIDS landscape. There have been more achievements in the past five years than in the preceding 23 years," the report said.
"More than ever before, there is hope that ending AIDS is possible. However, a business-as-usual approach or simply sustaining the AIDS response at its current pace cannot end the epidemic."
The UN report said ending the AIDS epidemic by 2030 would mean the spread of HIV was being controlled or contained, and that the impact of the virus in societies and in people's lives had been reduced by significant declines in ill health, stigma, deaths and the number of AIDS orphans.
According to UNAIDS, $19.1bn was available from all sources for the AIDS response in 2013, and the estimated annual need by 2015 is currently between $22bn and $24bn.