"swift and efficient" is a correct and usable phrase in written English. You can use this phrase when referring to something that gets results quickly and without much difficulty. For example, "The new system is swift and efficient; it has streamlined our workflow."
The results have been swift and efficient.
Hussey shuffles through a swift and efficient over of slow right arm bungers.
The authorities organised the swift and efficient evacuation of tens of thousands of tourists and locals.
And the U.S. buildup in Saudi Arabia has been swift and efficient.
Without swift and efficient upgrades, the system will continue to favour ageing and increasingly unreliable power stations".
Swift and efficient evacuations were jeopardized by the sheer number of people trying to escape confined, crowded spaces.
In the end, pragmatic Boer leaders such as Louis Botha and General Smuts trumped the will of the bittereinders and opted to negotiate for peace on the basis of British suzerainty, promises of local self-government, the swift restoration and efficient management of the gold mines, and, crucially, the alliance of Boers and Britons against black Africans.
This stems from the belief that it could make financial service transactions more secure, trustworthy, swift and cost-efficient.
Your counterattack should be swift and effective.
Such a move would make policing swifter and more efficient, he said.
When the Nazis invaded in March 1944 they used the lists of members of the Jewish community to organise one of the swiftest and most efficient episodes of the Holocaust.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK