The investment environment for all things related to application program interfaces remains hot. OpenLegacy Inc., a maker of microservices-based API integration tools that are primarily intended for use with legacy enterprise applications, Wednesday said it has closed a funding round of $30 million.

The Jerusalem-based startup helps organizations give new life to older applications by automating and standardizing the process of extending them with microservices-based APIs. This enables new functions to be added without risky and expensive changes to the legacy code base.

When it comes to equipping legacy software with born-in-the-cloud features, “rewriting everything is usually not an option,” said Zeev Avidan, OpenLegacy’s chief product officer. Organizations typically extend legacy applications by using middleware, but that approach is “completely incompatible with the concepts and benefits of microservices,” he said.

Microservices are self-contained software functions that usually run a single business process and can be deployed as needed. Many modern applications are now constructed entirely of microservices because the architecture is more flexible, faster and reliable than that of traditional monolithic applications.

Although many companies have toolkits for building and managing APIs, OpenLegacy claims to be the only one targeting the large installed base of enterprise applications that were created before the advent of cloud services. It says its software can integrate APIs into complex legacy applications in minutes. “This is in contrast to the months that this process takes today,” Avidan said.

The funding round is OpenLegacy’s first and includes a long list of investors led by Silverhorn Investment Advisors. The startup is a flagship company of “The Floor,” an Israel-based global innovation platform for financial technology.

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