Nginx today announced that it has raised a $43 million round as it rides a surging wave of interest in cloud-based computing that uses microservices for application development.

The round was led by Goldman Sachs Growth Equity fund and brings Nginx’s total raised to $103 million. The company says it is now being used by more than 30 percent of Fortune 50 companies and a total of 450 million websites.

“We’re excited to welcome Goldman Sachs, as we believe they’re the right partner to support us in driving adoption of the Nginx Application Platform and extending our leadership in microservices enablement,” said CEO Gus Robertson, in a statement. “In the last 18 months, Nginx has introduced six new technologies to the platform to accelerate the modernization of our customers’ application infrastructure. Goldman Sachs brings real-world experience managing mission critical applications (both legacy and new), which will help us further accelerate our platform vision.”

Read more: How developers want to use Kubernetes and microservices to make the web faster, stable, and more open

With more and more critical systems running on the internet, developers have been rethinking the way large, bulky software applications are written.

The team at Nginx is breaking out separate features, or “microservices,” and placing them in containers that have all the necessary pieces for an application to run in one package. This allows the application to be moved across different platforms and operating systems without having to be rewritten, and has the added benefit of making the overall system more stable.

An open source tool called Kubernetes is typically used to manage deployment of microservices. Nginx’s development philosophy holds that breaking applications into smaller, self-contained units can significantly reduce costs and the time needed to write, deploy, and manage each one.

Nginx makes a suite of tools to help enterprises in their drive toward this more modern architecture. While companies are becoming increasingly dependent on the internet for their business, Nginx notes that modernizing applications can still be a slow and cumbersome process.

The company says it will use the new funding to further develop its products and grow its network of partners. It also is planning a more aggressive international expansion, with a focus on the Asia-Pacific region.

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