I’ve published [iOS]try out Azure pipeline for Xcode build including XCTest/XCUITest as an article about Azure pipeline and iOS build.
I thought we can use arm architectured emulators in Azure environment for Android case as well as Travis or CircleCI, etc.
But I noticed we could run tests on x86 emulators in Azure.
PR: https://github.com/KazuCocoa/EspressoEnv/pull/18/files

I moved an OSS project from Bitrise to Azure in order to make running time short with x86 emulators.
In real project use, https://sourcediving.com/x3-speed-up-android-ci-at-cookpad-544d97c26ccb is much better than Azure if you can configure it in this case though.