Fledgling automated software testing startup Mabl has raised $20 million in a series B round of funding led by Alphabet’s venture capital (VC) arm GV, with participation from its series A investors Charles River Partners (CRV) and Amplify Partners.

Mabl was founded out of Boston in 2017 by former Googlers Dan Belcher and Izzy Azeri, who had sold Stackdriver, a cloud systems monitoring business, to the internet giant back in 2014 for an undisclosed amount. Google later leveraged its acquisition when it launched the rebranded product as Google Stackdriver two years later 2016, before Belcher and Azeri left their product management positions at Google to form Mabl, which they formally launched to the public in February this year.

In a nutshell, Mabl is an automated software testing tool that uses machine learning to find bugs, JavaScript errors, broken links, latency, and visual regressions, among other glitches in websites. It nestles in a space currently occupied by the likes of Selenium, which Mabl previously said was the quality assurance (QA) tool of choice for most of its clients during the alpha stage. But by bringing scriptless testing to the browser underpinned by a focus on machine learning, the company is looking to expedite and simplify the testing process.

It can also integrate into developers’ existing workflow, as it supports Atlassian, Jira, Slack, Webhooks, Jenkins, and more.

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QA is an integral facet of shipping functional software, but the testing process can often be slow, which has a knock-on effect for shipping flaw-free products — testing is a continuous process…