Sauce Labs

Definition

Sauce Labs is a cloud platform that provides on-demand access to real and virtual browsers, operating systems, and mobile devices for running automated and manual software tests. Rather than teams maintaining their own device labs and browser installations, Sauce Labs hosts the infrastructure and exposes it through standard automation protocols used by tools like Selenium, Appium, and Cypress. Test sessions are recorded as video, screenshots, and logs, and a live testing mode also supports manual, human-driven exploratory testing on the same remote infrastructure.

Overview

Sauce Labs is a cloud platform that solves the problem of needing to test software against a combinatorial explosion of browsers, operating system versions, and mobile device models without a team purchasing, provisioning, and maintaining that hardware and software matrix itself. It hosts real and virtual browsers and devices centrally and rents access to them through standard automation protocols. A test written with a standard framework such as Selenium or Appium connects to Sauce Labs' remote grid instead of a local browser or device, and the same test can then run against many browser and OS combinations, or real physical mobile devices, without the team provisioning any of that environment itself. Each session is recorded as video, screenshots, and logs, so a failure can be diagnosed without reproducing the exact environment locally, and live testing sessions let a person interact with a remote browser or device manually for exploratory testing. Sauce Labs sits alongside close competitors like LambdaTest and BrowserStack, offering broadly the same category of service — hosted cross-browser and cross-device testing infrastructure — with differences mainly in device inventory, pricing structure, and the analytics layered on top, such as Sauce Labs' dashboards for flaky test detection and pass-rate trends across a suite. It differs from a local device lab primarily in trading fixed upfront hardware cost for usage-based pricing and broader device coverage. Teams use Sauce Labs to run automated cross-browser tests without maintaining local infrastructure, test native and hybrid mobile apps on real remote devices, and scale parallel test execution across large automated suites, particularly when they need coverage on older browser versions or a wide range of physical mobile hardware that would be impractical to keep in-house. Because Sauce Labs is priced around concurrent sessions or usage minutes, cost scales directly with the size and parallelism of a team's test suite, which is the central trade-off against an in-house lab, where cost is more fixed but device diversity is usually lower. Teams with narrow browser support requirements, or infrequent test runs, may not need dedicated cloud testing infrastructure at all and can rely on local or CI-hosted browsers instead. Sauce Labs also integrates with popular CI systems, letting a pipeline trigger cloud test runs automatically as part of an existing build process rather than requiring a separate manual trigger. Its analytics dashboards can surface which tests fail intermittently across multiple runs, helping a team distinguish a genuinely broken feature from environmental flakiness in the test infrastructure itself. Device and browser inventory is updated on an ongoing basis to keep pace with new releases from browser vendors and device manufacturers.

Key Features

• Cloud-hosted grid of real and virtual browsers and operating systems
• Real and emulated mobile devices supporting Appium automation
• Compatibility with Selenium, Appium, Cypress, and Playwright
• Session recordings including video, screenshots, and logs
• Live, manual testing sessions for exploratory testing
• Analytics dashboards for flaky test and pass rate trends
• Parallel test execution across many concurrent sessions

Use Cases

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Frequently Asked Questions

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