Lancaster is the best man for the job
As England's caretaker, Stuart Lancaster did exactly as he was asked, and he is now reaping the considerable reward.
He repaired the damage of the World Cup, he blooded a new generation of players, and he won four matches out of five. It has proved a convincing audition.
We will learn more about Lancaster's backroom staff in the coming days, but we know that he wants to retain the assistants that worked with him in the Six Nations Championship. Graham Rowntree is a stone-cold certainty as forwards coach.
My information is that Andy Farrell can be persuaded to join England on a permanent basis too, though he will need to secure a release from his contract at Saracens.
Lancaster (centre) celebrates the win over Ireland with Brad Barritt and Tom Croft
The chief executive of the Rugby Football Union, Ian Ritchie has made a bold appointment. He had the option of choosing a big-hitter.
White won the World Cup in 2007. At one stage Mallett won 17 tests in a row with the Springboks. Any one of these men would have been the more conservative choice.
For all his work with Leeds and the England Saxons, Lancaster has just five senior international matches on his CV. Andy Farrell is in his infancy in coaching terms.
Graham Rowntree is the most experienced of the three. He has five years with England, two World Cups and a British Lions tour behind him.
So Ritchie's decision signifies a leap of faith. The man so recently installed at the helm of English rugby has clearly seen enough to put total trust in Lancaster.
The atmosphere at Twickenham recently tells you that England rugby fans will support the appointment, and hope that the new man can build on the excellent foundations that he has laid. Winning the World Cup of 2015 is the target, and nothing less.
The critical part is what happens next. Lancaster has weathered the storm of the Six Nations Championship, and emerged with credit.
England were not a million miles from achieving the most unlikely of Grand Slams. The wonderful Welsh resolve, and a slice of magic by Scott Williams put paid to their hopes at Twickenham.
No one should be under any illusions that the next few months will be extremely difficult for Stuart Lancaster. England play three Tests in South Africa in June. He will need no reminding of the enormous challenge of beating the Springboks on home turf.
Three years ago, the best in the British Isles were assembled for a similar mission, and even they fell short. The Lions were beaten 2-1 in a titanic series of fabulous rugby and bruising attrition.
In November, England host the "big three" from the southern hemisphere, along with Fiji. The forthcoming fixture list is unforgiving. In a worst case scenario, England might win one from the next seven matches.
Perhaps they will win them all, but I would suggest that the former is a good deal more likely than the latter.
So the honeymoon is over for Stuart Lancaster. Right now he has the overwhelming backing of his players, the fans, and the senior management.
The emotion of his success in Edinburgh, Rome and Paris is still flowing through collective veins, and the demolition job on the Irish scrum at Twickenham was a forceful reminder of English capabilities.
How will he fare when the results are against England? Will he have the strength of personality to stick to his task, to make the necessary selection calls, and to deal with a vociferous media?
Will he be able to conjure an incisive attacking threat from his back division, to complement their obvious defensive qualities? The landscape might look very different at the end of November, and it will take all his resilience to prosper.
England supporters must be patient. Lancaster's team is an embryonic one. They are extremely unlikely to be transformed into world-beaters overnight. They will lose matches.
They will also learn hard lessons and grow as a result. In players like Ben Youngs (aged 22, with 22 caps), Owen Farrell (aged 20, 5 caps) and Manu Tuilagi (aged 20, 10 caps) he has some potentially world-class talent available to him.
There is a layer of experience above them too - players such as Tom Croft, Dan Cole and Ben Foden, who are all in their mid-twenties and approaching the 30 cap mark. The coach has three years to bring his group to fruition.
Lancaster is an honest, straightforward, passionate man who has shown all the attributes necessary for long-term success. We wish him well.