Scaling a Global IoT-Powered Live Audio Streaming Platform for Real-Time Broadcasting
We worked with Blast Radio to transform their MVP into a scalable live audio platform. The platform is designed to enable creators to stream lossless audio worldwide. The platform is built using microservices, AWS cloud scaling, IoT firmware enhancements, and multi-regional streaming.
Product Vision
The vision behind Real-Time broadcasting app
Blast Radio set out to reimagine live broadcasting by enabling creators to stream lossless, real-time audio using a purpose-built hardware device. The initial MVP validated demand, but the underlying infrastructure was not designed to support global scale, real-time engagement, or a growing ecosystem of IoT devices.
With backing from Sony, Blast Radio needed an enterprise-ready platform that could support rapid growth while maintaining audio quality, reliability, and creator experience.
The Challenge
Blast Radio’s growth ambitions surfaced a set of tightly coupled challenges across infrastructure, IoT, and product experience
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Firebase scalability limits leading to rising costs and architectural constraints
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Global latency issues affecting real-time audio quality across regions
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IoT firmware complexity across multiple device types and versions
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Missing creator engagement layers such as tipping, fan mail, and real-time feedback
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Fragmented analytics spread across tools with no centralized customer data view
The platform required a foundational rebuild without disrupting creators already live on the product.
Our Approach
7Span rebuilt Blast Radio’s infrastructure with cloud-native scalability, real-time engagement, and robust IoT support.
Cloud Migration
Migrated Blast Radio from Firebase to a MySQL-backed, AWS-native microservices architecture, leveraging ECS and Lambda for elastic scaling, fault isolation, and cost control.
Multi-Region Streaming
Configured Icecast streaming infrastructure across regions to deliver lossless, low-latency audio for listeners worldwide.
IoT Firmware Release System
Built a custom firmware management system to support multiple IoT device types, versioning, and seamless over-the-air updates.
Mobile Apps
Developed cross-platform Flutter apps for creators and listeners, enabling one-tap live broadcasting, profile management, and real-time fan interactions.
Data Streaming & Analytics
Implemented RudderStack CDP to stream real-time data into Amplitude, Customer.io, AWS Personalize, and an S3-based data lake. This gave Blast Radio a real-time view of creator and listener behavior.
Admin & Monitoring Tools
Operational visibility was enabled using Retool and Metabase, allowing teams to monitor streams, devices, analytics, and platform health from a single control layer.
Business Impact
The rebuilt platform enabled Blast Radio to move from a constrained MVP to a globally scalable live audio ecosystem.
100,000+
live broadcasts streamed after launch
30%
Low-latency audio delivery across multiple regions
100%
Seamless firmware updates rolled out across diverse IoT devices
80%
Creator engagement boosted with fan mail, tips, and vibes features
Technology Used
A quick glance at the technologies used in the making of Blast Radio
7Span helped us scale Blast Radio from an MVP into a truly global live streaming platform. Their expertise in cloud, IoT, and real-time systems was a game-changer.
7Span delivered through senior-engineer-led execution, rapid decision-making, and a scalable architecture aligned with long-term, Sony-backed growth.
Engineering clarity where others add complexity. We help businesses build, modernize, and scale with the right technology. Whatever your challenge, stage, or vision, we make IT possible.
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