Customer Stories / Hi Tech, Electronics & Semiconductor / Switzerland

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u-blox Sends Data to Millions of Devices and Optimizes Costs Using AWS IoT Core

Learn how u-blox, a global IoT location and communication solution provider, established scalability and improved cost efficiency using AWS IoT Core.




cost optimization

3-6 cm

of positioning accuracy

Achieved a low-maintenance

managed solution

Achieved low latency

of milliseconds across multiple regions to millions of devices 


u-blox aimed to develop an Internet of Things (IoT) location-as-a-service (LaaS) solution that could scale to millions of devices and retain centimeter-level, high-precision positioning accuracy. The company offers a range of IoT-supported positioning and wireless communication products and services for its customers globally. u-blox needed its IoT LaaS solution to scale better than the industry standard real-time kinematic (RTK) and precise point positioning (PPP) global navigation satellite systems (GNSS) correction services, which cause bottlenecks at scale due to high latency in the range of seconds to minutes.

u-blox, an AWS Partner and strategic customer, built its PointPerfect LaaS solution and delivered correction services to end points at scale using AWS IoT Core—used to connect billions of IoT devices and route trillions of messages to AWS services without managing infrastructure. PointPerfect sends correction data to improve the position of GNSS receivers within milliseconds, delivers 3–6 cm positioning accuracy, and can scale to millions of devices.

Tractor view

Opportunity | Building a PointPerfect Solution on AWS IoT Core

u-blox is a Swiss company that was founded in 1997. The company has grown over the years and provides location and communication services to support its technology solutions. u-blox built PointPerfect to provide high-precision location data to support emerging use cases, such as autonomous vehicles and mobile robotics. To do that, u-blox needed a scalable way to send precise location data, on demand, to millions of devices within milliseconds.

GNSS receivers use correction services to help resolve errors that are generated as data flows from satellites to Earth. u-blox realized that with conventional technology, it would be challenging to scale its operations for PointPerfect in addition to incurring hefty overhead charges.

Instead, u-blox developed its PointPerfect solution using the message queuing telemetry transport (MQTT) protocol on AWS IoT Core, a fully managed messaging broker, alongside AWS Lambda—a serverless, event-driven compute service—to efficiently scale its operations and transition toward an event-based operational model to drive cost efficiencies.

u-blox has been an AWS customer since 2012, and the main reason for its adoption of AWS was the broad and deep range of capabilities it finds in AWS services. u-blox is also a key strategic partner for AWS IoT ExpressLink, a new service that was launched in 2022 that can be used to quickly and easily develop IoT devices that connect securely to the AWS Cloud. This service powers u-blox’s IoT connectivity modules, making it simple for product developers to configure, provision, and connect devices to cloud services. For its PointPerfect solution, the company wanted to continue using AWS-managed services to deliver the required accuracy and reduce the data communication latency on a scale of millions of IoT devices. “We’ve been on AWS for more than a decade. We love serverless AWS services and the support that lets us focus on solutions rather than routine tasks,” says Rajani Rao, principal engineer at u-blox.


We’ve been on AWS for more than a decade. We love serverless AWS services and the support that lets us focus on solutions rather than routine tasks.”

Rajani Rao
Principal Engineer, u-blox

Solution | Sending Data to Millions of Devices in Milliseconds Using AWS IoT Core

PointPerfect uses AWS IoT Core alongside AWS Lambda, AWS IoT Events—which detects and responds to events from IoT sensors and applications—and other AWS services to optimize its system, broadcasting correction services and publishing data through communication channels to devices.

Instead of treating correction service data as a stream of incoming data, the company applies event-driven architecture that handles data as distinct events. For instance, upon receiving continental data on Amazon Simple Queue Service (Amazon SQS)—fully managed message queuing for microservices, distributed systems, and serverless applications—an initiation in AWS Lambda would transform this data for different localized nodes and distribute the data through several MQTT topics. When building this unique solution, u-blox worked alongside AWS IoT solutions architects to resolve blockers that would have affected latency as the solution scaled.

u-blox used the new retained message feature of AWS IoT Core to store and forward messages to offline devices when they connect. Working alongside specialist teams at AWS (IoT solutions architects), u-blox could raise the standard limits of its AWS account and understand the implications of its design decisions.

As of 2023, there are thousands of connected devices using PointPerfect, but u-blox expects this number to rise into the millions as high-precision GNSS applications reach mass adoption. With support from the AWS team, u-blox devised a solution that involved grouping devices by geographical location, which lowers communication bandwidth and latency.

“We are confident that our solution scales, so our customers can scale without worry,” says Franco de Lorenzo, head of product services at u-blox. “If they have 1,000 devices or 100,000, customers should experience the same level of performance.”

PointPerfect has a 3–6 cm positional accuracy and a 99.9 percent uptime availability. PointPerfect can also relay correction data to improve the positioning of GNSS receivers in milliseconds. PointPerfect uses less bandwidth compared with other traditional protocols due to the use of AWS IoT Core, which transmits data as discrete packages, making it a better alternative to traditional data-streaming methods.

With an event-driven architecture using AWS Lambda and AWS IoT Events, u-blox has achieved a 20 times cost optimization because it pays only for what it uses and not for the time in between transmissions, as would have been the case had it streamed data 24-7.

At the same time, u-blox can use its new solution to experiment and innovate quickly. “If I want to push the service forward, I can ask the team to experiment and provide feedback quickly,” says de Lorenzo. “The speed achieved after migrating to this architecture on AWS helps me with decision-making from a product perspective.”

Outcome | Launching Innovative Services Using AWS

u-blox has set itself up for success as more IoT devices enter the marketplace. The ability to scale up to an expected millions of devices will be key for u-blox. The company plans to roll out more localized processing at scale with PointPerfect by the end of 2023. This will optimize bandwidth usage by up to 70 percent of the bandwidth used by the continental stream, further improving on the MQTT and AWS IoT Core model.

u-blox is continually evolving the PointPerfect service to better meet its customers’ needs. “As an AWS Partner, we receive proactive and comprehensive support,” says Rao. “We work closely alongside AWS in building solutions and find AWS services to be really useful.”

About u-blox

u-blox is a Swiss company that creates innovative products and services to empower customers to locate their devices and connect them from silicon to cloud. These products include positioning and connectivity chipsets and modules, as well as data services.

AWS Services Used

AWS IoT Core

AWS IoT Core lets you connect billions of IoT devices and route trillions of messages to AWS services without managing infrastructure.

Learn more »

AWS Lambda

AWS Lambda is a serverless, event-driven compute service that lets you run code for virtually any type of application or backend service without provisioning or managing servers.

Learn more »

AWS IoT Events

AWS IoT Events monitors your equipment or device fleet for failures or changes in operation and starts necessary actions.

Learn more »

Amazon SQS

Amazon Simple Queue Service (Amazon SQS) lets you send, store, and receive messages between software components at any volume, without losing messages or requiring other services to be available.

Learn more »

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