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Desktop Tiers For Automation


Tiers limit is the maximum number of parallel tests one organization can execute on a single combination e.g. IE 11 on Windows 7. These tiers are pertinent to Browser Automation.

Our Current Desktop Tiers: The following table shows the maximum number of parallel tests that LambdaTest support for each Tier and their respective Browser-OS combinations.

Note:  Tiers and their values are generated based on how a particular browser or OS performs in the market. Tiers’ values are updated continually based on market trends and customer-usage on the LambdaTest platform.

TiersOperating SystemBrowsersBrowser Versions
(Tier 1 (100 parallel sessions)Windows 10ChromeAny Version
FirefoxAny Version
IE11
Edge80 to 86
Window 7ChromeAny Version
FirefoxAny Version
IE11
Edge80 to 86
Tier 2 (50 parallel sessions)Windows 10Edge16 and 17
Windows 8ChromeAny Version
FirefoxAny Version
IE10
Edge80 to 86
Windows 8.1ChromeAny Version
FirefoxAny Version
IE11
Edge80 to 86
Mac High SierraChromeAny Version
FirefoxAny Version
Safari11
Edge80 to 86
Mac MojaveChromeAny Version
FirefoxAny Version
Safari12
Edge80 to 86
Mac CatalinaChromeAny Version
FirefoxAny Version
Safari13
Edge80 to 86
Tier 3 (25 parallel sessions)Windows 10Edge15
Windows 7IE10
Mac SierraChromeAny Version
FirefoxAny Version
Safari10
Edge80 to 86
Tier 4 (10 parallel sessions)Windows 10Edge16
Windows 7IE8 and 9
Mac Big SurChromeAny Version
FirefoxAny Version
Safari14
Edge80 to 86
OSX YosemiteChromeAny Version
FirefoxAny Version
OSX EL CapitanChromeAny Version
FirefoxAny Version
OSX MavericksChromeAny Version
FirefoxAny Version
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