Long-time former AAP editor John Coomber is in no doubt.
The 2000 Sydney Olympics - widely remembered as the greatest Games ever - is the biggest, most complex news event AAP has covered in its proud 85-year history.
Despite the inevitable hiccups in the seven-year buildup, the Games were a raging success for Australia as a whole, for organisers SOCOG, for the Australian Olympic Committee, for the NSW government and - most importantly - for the 617-strong home squad who claimed 16 golds to finish a lofty fourth on the medals table.
They were also a triumph for the 76-strong AAP team of journalists, photographers, technicians and other support staff headed by Coomber, who had attended his first five-ringed extravaganza in Montreal way back in 1976.
The planning process started only a matter of days after Sydney just edged out hot favourite Beijing by two votes on September 23, 1993, for the right to host the first Games of the new millennium.
And it only cranked up from there.
"I have no idea how you could calculate the total man hours that went into the preparation but it would be an enormous number," said Coomber.
"Three years after that we went to Atlanta where a lot of the Sydney organisers were learning how not to run an Olympics.
"In the last two years I spent increasingly more time on the Olympics project and for the last six months I basically did nothing else."
Coomber had previously led the AAP teams at the 1992 Barcelona and 1996 Atlanta Games.
All that experience was to prove invaluable.
A key moment came in 1999 when the International Olympic Committee granted AAP host agency status after a period of intense lobbying.
In the process, much was made of AAP's long history of Olympics coverage, which included sending journalists to every Summer Games since World War II.
Being appointed the official host agency meant AAP could draw its accreditations from the international pool, rather than the domestic one where News Limited and Fairfax - as sponsors of the Games - were certain to scoop up most of them.
Prime positions in the media tribunes at all venues was another big plus.
The nerve centre of the AAP operation was the office in the Main Press Centre at Homebush Bay - manned 24 hours a day for the duration of the Games.
Due to the ingenuity of the technical team, it was set up like a mirror image of the main newsroom back at Lang St.
A huge stock of beer and wine was "smuggled" in during the set-up period, while a rough and ready mini-golf course - which proved hugely popular with stressed-out subs - was constructed behind one of the walls adjacent to the office.
Specialist reporters were assigned to each of the 26 sports - a luxury the company had never enjoyed before or since.
Journalistic life was very different with the internet and email still in their infancy - and Wifi not yet a blip on the horizon.
The latest in mobile phone technology was the little Nokia handsets which could be used to make and receive calls, send basic texts and not much more.
The filing was done mostly via dial-up.
A small and dedicated squad of photographers rushed from venue to venue to capture all of the action.
Photo editor Dean Lewins, who made his Olympics debut in 2000, recalled that the snappers shot the Sydney Games roughly 50 per cent each on film and digital.
The digital Nikon D1 camera in use at the time shot a 2MB file, while the current D6 shoots in excess of 40MB.
When shooting with film, the negatives were rushed to the Kodak office at the MPC for processing.
It took close to an hour after images had been taken for them to be issued on the wire. In 2020, the process takes less than two minutes.
But most importantly, the technology worked.
As did just about everything else.
One of Coomber's biggest fears was that a huge news story - be it a natural disaster, a mass shooting, a constitutional crisis or something else along those lines - would break when AAP was focused almost exclusively on the goings-on in and around Homebush Bay.
But nothing did.
"I just loved the atmosphere of it all," recalled Coomber.
"All the international agencies and other journalists were just so happy to be in Sydney.
"The feeling in the main square at the media village (complete with a bar that stayed open until all hours) was amazing.
"Even the weather was great, which is far from certain for September in Sydney.
"It was freezing until about three days before the Games started and then it just came good.
"Everybody who took part in it was proud.
"I was utterly exhausted at the end of it but I was very proud.
"I could look back and say it went like clockwork."
Eight members of the AAP team for the 2000 Olympics are still on staff at AAP 2.0 - reporters John Salvado and Steve Larkin (both of whom covered athletics in Sydney), Melissa Woods (rowing and canoeing), Roger Vaughan (cycling) and Darren Walton (tennis and triathlon), along with photographers Dean Lewins and Dave Hunt and engineer Paul Buttie.