Boris Johnson is being remembered by the Conservative Senedd leader, who will be stepping down as party leader following losing support from his ministers.
To allow a Tory leadership race to take place, Mr Johnson plans to stay as prime minister until the autumn.
Andrew RT Davies stated that his legacy was delivering on the will of the British people by ending Brexit "deadlock".
On Wednesday night, cabinet ministers, including the Welsh secretary, called for Mr Johnson's resignation.
Simon Hart joined an immediate cabinet mutiny. He claimed that his colleagues had tried their best to "turn the ship around", but he didn't believe it was possible.
Downing Street announced that Sir Robert Buckland, a South Swindon MP and former justice secretary from Llanelli, will replace him.
On Thursday morning, Mr Hart kept his head down.
He tweeted, "For the long and flattering list of journalists who (very flatteringly), seek my views on current affairs, I'm here in west Wales today doing constituency stuff, talking to my dogs, who seem reassuringly uninterested in my activities,"
Recalls about how the prime minister handled sexual misconduct allegations against Chris Pincher, former deputy chief whip, sparked the revolt.
Mark Drakeford, Wales' First Minister, stated that the drama at Westminster was "an inevitable end to the flawed premiership under Boris Johnson", but that the business isn’t over.
"The prime minister must go immediately. We need a new start, preferably through general elections, so we can have a decent, reliable government that focuses on the most important things in people's lives every day."
"We have been without government in Westminster for several months now, as the Conservative Party turned in on ourselves."
The Tory Senedd leader, Boris Johnson, said that Johnson's resignation was a sign of his will to leave a legacy. He had ended the deadlock, secured Brexit, and fulfilled the will of the British people.
Boris secured a historic victory for 2019 and our freedom from the Covid-19 pandemic.
"Regrettably it has become extremely difficult for him now to deliver on his mandate.
"I wish him, Carrie, and all his family the best for the future. I also thank him for his service for our country.
Expect the outgoing prime ministers to remain in office until a successor is chosen.
Stephen Crabb, former Welsh Secretary and MP for Preseli, stated that it was the right decision to have Mr Johnson resign but it is always sad to see a prime Minister's term cut short.
He said that he would prefer to have a temporary prime minister in charge of the country while a real leadership contest takes place.
Plaid Cymru claimed that Mr Johnson caused "unprecedented harm to our devolution settlement."
Party leader Adam Price and Westminster leader Liz Saville Roberts made a joint statement: "Powers were rolled back, legislation was unilaterally repealed, and conventions have continued to be ignored."
They asked for candidates to be elected Tory leaders to "promise a fundamental overhaul of Westminster's relationship with Welsh devolution".
"They could promise respect for our institutions, and our requests to devolve further powers.
"Given their track records, we know they won't,"