Swiss startup LocalStack has raised $25 million in a Series A round led by Notable Capital to help developers emulate and test cloud apps locally.
LocalStack has shifted the development process off the cloud and onto a developer’s local machine to emulate the environment where it will go live.
Initially, it focused on helping an Atlassian employee work while commuting, however, now with an impressive roster of self-serve customers, it has moved into a full-time business.
LocalStack’s offering consists of an emulator, which is a Docker image, and a cloud platform for team collaboration, telemetry data, insights and more.
It supports 100 core AWS services, including IAM via Amazon Cognito, Amazon Kinesis data streams and Amazon’s interactive query service Athena.
LocalStack is looking to ramp things up and go multi-cloud, adding support to Microsoft’s Azure, expected to be available sometime in 2025.
The company already has a global team of more than 50 operating mostly out of Europe, with a substantial customer base in the U.S.
LocalStack has already operated largely under the radar, but has substantial revenue numbers and 900 paying customers including Apple, Comcast, IBM and Workday.
Developers are already able to mock out certain parts of their infrastructure locally to run tests and AWS SAM itself also offers some tools to enable developers to emulate some of its services locally.
However, LocalStack is more comprehensive, supporting more than 100 core AWS services, and is almost like a drop-in replacement for AWS cloud.