Esper.io is a technology startup that provides a platform for businesses to efficiently manage their device fleets. The company operates in the device management market, serving clients who rely heavily on devices for their operations. This includes businesses with a mix of Android (GMS or AOSP), iOS, or a mixed fleet of devices.

Esper.io's platform offers a comprehensive solution for deploying, monitoring, managing, and updating devices. It provides a single interface, or "single pane of glass," from which businesses can control their entire device fleet. This includes granular app deployment, precise geofencing, and advanced APIs.

The company's business model is based on providing a robust, scalable, and modern device fleet management solution. It makes money by charging businesses for the use of its platform. The platform is built on automation and ease of use, which helps businesses scale quickly and efficiently.

Esper.io also offers a custom Android solution for businesses with advanced device fleets. This solution is built from the ground up to the client's standards and provides fine-grain control over the entire experience, from firmware to apps.

In addition, the company provides hardware expertise to guide businesses in building a new device fleet, scaling an existing fleet, replacing hardware, or even determining what they need. Esper.io's deep expertise in both off-the-shelf and custom devices, combined with its powerful SDK and APIs, allows businesses to build truly custom business solutions.

Keywords: Device Management, Android Solution, iOS Solution, Device Fleet, Automation, Scalability, Custom Business Solutions, Hardware Expertise, SDK and APIs, Geofencing.