Swift LanguageWhen Things rebuilt their server backend with Swift, they saw improved code reuse, rock-solid stability, and a fourfold speed boost when processing sync requests. @things #ServersideSwift https://culturedcode.com/things/blog/2025/05/a-swift-cloud/
Pierre Marandon@swiftlang @things I also do love server side Swift. However, if I am not mistaking, I do not see in the article how (language, framework) the previous system was written. So the comparison is not really informative…
Ezekiel 
@kabuye more technical details here: https://www.swift.org/blog/how-swifts-server-support-powers-things-cloud/
How Swift's server support powers Things Cloud
You might be familiar with Things, a delightful personal task manager that has won two Apple Design Awards and is available across Apple devices including iPhone, iPad, Mac, Apple Watch, and Apple Vision Pro. At Cultured Code, the team behind Things, we care about a great user experience across every aspect of the product. This extends to our server back end, and after a rewrite our Things Cloud service has transitioned entirely to Swift. Over the past year in production, Swift has consistently proven to be reliable, performant, and remarkably well-suited for our server-side need.
@ezekiel Thanks ! So for those who wonder : previous stack was Python 2 + Google App Engine.