Cane said he felt emotional when the final whistle blew at Ellis Park.
"I knew how much it meant to me, but it all hit me at once, the enormity of the occasion, the pressure and the fact we got it done and I had a lot of pride."
That was because of the comments fired at the side after their three consecutive losses this year.
"Playing South Africa at Ellis Park in a one-off fixture itself is a massive challenge, yet what we've been through in the last month in terms of not performing where we wanted to be. So, to be able to deliver in a big, pressure occasion is massively satisfying."
He said the performance of the newcomers in the front row, in what was the biggest Test in their careers, was awesome. He was delighted for them and for the competition that would create within the side in the future.
The composure the team showed when South Africa claimed the lead for the first time in the 66th minute, with replacement fullback Beauden Barrett just having been sent to the sin-bin, was pleasing, he said.
There had been times in the last month when that had not happened. But on Saturday, it demonstrated the strength of the belief within the side.
"To be able to make so many improvements in the last two weeks is pleasing, and the challenge will be to continue that improvement and put in a good one back home.
Lock Sam Whitelock said Ellis Park had been the venue where he had endured two of his hardest Test matches.
"That game in 2013, I got 10 minutes into the game thinking 'I'm not even going to make to halftime' and managed to play the whole game, so it tests you in so many ways.
"Whether it's the opposition, whether it's the altitude, the crowd, the atmosphere, all the history.
"There're amazing stories, amazing results between the All Blacks and Springboks at Ellis Park, so to do the job last night and do it really well is very rewarding and very special.
"That  game was just end-to-end, both teams came to play. We needed one point to win the Rugby Championship and they needed to beat us with five so it just set the game up for expansive rugby and both teams did that."
Doing it again at the weekend, he said: "I'm sure a lot of the guys will enjoy looking back at that in the future."
Adding to the lustre of the performance was the pressure on the side.
"We know as players that we need to be better, there's still things we need to work on."
Whitelock said the pressure to succeed was not only on coach Ian Foster but on all the group.
Over the last five or six Test matches, the effort had been going in, which excited him. All the criticism after their losses demonstrated how much people cared.