Washington-based Esper has closed a $60m series C funding round, meaning it has attracted nearly $100m in capital since starting the company.

The money will be used to build critical infrastructure for enterprises and their customers with mission-critical tools such as point-of-sale terminals, in-store kiosks and patient monitoring devices.

The funding round was led by Insight Partners and joined by past investors including Scale Venture Partners, Madrona Ventures, Root Ventures and Ubiquity Ventures. Its $30m series B round was in May.

Esper plans to leverage financial strength into building and innovating the infrastructure its customers need to manage their device fleets seamlessly. This latest funding round will primarily be used to expand its ability to get in front of more enterprise customers. This means expanding its hardware and software partnerships such as the one with Siyata for first responders.

“Our biggest opportunity right now is getting the word out to more enterprises that Esper exists,” said Yadhu Gopalan, CEO of Esper. “Our customers tell us that we are completely resetting their assumptions about what is possible. It’s so rewarding to see the light bulb go off when a customer realises all of the infrastructure they no longer have to build themselves.”

While agile development is standard in most software development, it isn’t yet when it comes to managing device fleets. True agility demands devops-powered infrastructure to close the loop and bring that investment to life.

“For enterprises especially, dated thinking limits what’s achievable with a device strategy,” said Gopalan. “New thinking – devops thinking – is how you continuously and reliably deliver amazing experiences for customers.”

More than 200 enterprises and 2000 developers use the Esper platform.

“They decided to skip the challenge and expense of building custom infrastructure and device management systems,” said Gopalan. “By partnering with Esper on infrastructure, they can focus on what matters: their customers. Where would you rather be committing 80% of your engineering resources on any given day: infrastructure, or the mission-critical applications your customers rely on?”

He said this meant development teams suddenly had more free time to focus on product features, not maintenance.

“Resources previously spent on device management can now be spent on making those devices work better, deliver more value and delight people,” he said. “Big ideas can turn into realities faster. Customer experiences that weren’t possible before suddenly become possible.”

Ordermark is a reflection of this philosophy. Using a custom tablet, Ordermark lets restaurants manage all their online ordering systems such as Uber Eats and GrubHub in one place. They’ve helped thousands of restaurant brands nationwide streamline online ordering, in turn driving millions of new orders.

Esper has also partnered with Siyata Mobile on a rugged handset that’s designed to meet the extreme demands of emergency first responders. But to make that handset as reliable as the rest of the lifesaving equipment, a touchscreen wasn’t an option. This introduced unique device design and management challenges. It thus embedded Esper on Siyata’s handsets and streamlined fleet management on the back end.

Working with Esper, Spire Health gained the foundation it needed to build digitally-native healthcare monitoring, and sprinted from pre-launch to thousands of devices in the field.