Serverless eBook Platform with PDF-to-ePub Automation
- Custom ePublishing software development
- Digital Publishing Solutions
- Serverless architecture
- AWS Lambda
- AWS S3
- CloudFront CDN
- Mobile SDK integration
- Identity and access management
- High-load systems
Overview of Our Client
Our client is a digital publishing provider delivering electronic content to global audiences through a cloud-native platform built on a fully serverless AWS architecture. The solution provides enterprise-grade capabilities for secure content storage, granular access control with rental limitations, and low-latency distribution via CDN.
By combining federated authentication, automated PDF-to-ePub conversion, and mobile reader integration, the platform supports rapid content onboarding and scales seamlessly to accommodate unpredictable traffic spikes within a cost-efficient pay-as-you-go model.
Challenge
The client’s traditional infrastructure and fragmented tooling ecosystem created operational friction across the entire digital publishing workflow. Content onboarding was slow, access management was complex, and the platform struggled to scale efficiently as readership and the content catalog expanded. Maintaining performance during traffic spikes required costly server overprovisioning, while manual infrastructure management increased operational overhead.
Several critical challenges limited the platform’s growth:
- Handling unpredictable traffic spikes driven by new releases, seasonal demand, and academic cycles without maintaining idle infrastructure.
- Converting high volumes of static PDF files into mobile-optimized ePub formats in a reliable, scalable, and asynchronous manner.
- Enforcing strict ownership and rental policies for copyrighted digital content.
- Integrating multiple identity providers (Google, Apple, Facebook) while preserving centralized and secure access control.
- Delivering content globally with low latency and high availability.
As scale increased, the existing architecture became operationally heavy, cost-inefficient, and difficult to evolve. The client required a fully serverless, cloud-native architecture capable of automating content workflows, strengthening security controls, and supporting virtually unlimited concurrent users without infrastructure bottlenecks or performance degradation.
Main Goals
The fundamental goals of this project were:
- To eliminate infrastructure management by implementing a fully serverless, pay-as-you-go architecture.
- To automate large-scale PDF-to-ePub conversion through a reliable asynchronous processing pipeline.
- To ensure secure, granular access control with support for ownership and rental limitations.
- To provide seamless user onboarding via federated identity (Google, Apple, Facebook).
- To guarantee global low-latency content delivery for mobile users.
- To design a platform capable of supporting virtually unlimited concurrent users.
Project Overview
We designed and implemented a fully serverless eBook platform built entirely on AWS, replacing traditional server-based infrastructure with an event-driven cloud architecture. The platform provides out-of-the-box automation across the entire digital content lifecycle, including secure storage, identity-driven access control, large-scale PDF-to-ePub conversion, and global CDN distribution.
The architecture was designed to deliver elasticity, strong security, and straightforward operations. Using managed AWS services, the platform scales automatically during traffic peaks, enforces ownership and rental rules, and supports seamless federated login (Google, Apple, Facebook) — all without the burden of infrastructure management.
- Region: Global
- Industry: Digital Publishing / eLearning / Media
- Timeline: Phased implementation and continuous rollout
Solution
The platform was built as a fully serverless, event-driven architecture to eliminate infrastructure constraints and ensure seamless scalability. We implemented an automated content pipeline using AWS Lambda and SQS for large-scale PDF-to-ePub conversion, secured digital assets through granular IAM and S3 access policies, and enabled low-latency global delivery via CloudFront. Federated identity integration (Google, Apple, Facebook) simplified user onboarding while maintaining strict ownership and rental controls. As a result, the client obtained a highly elastic, secure, and operationally efficient digital publishing ecosystem capable of supporting unpredictable traffic spikes without manual infrastructure management.
Key Features
- Fully serverless architecture, eliminating infrastructure maintenance and enabling true pay-as-you-go scalability.
- Automated PDF-to-ePub conversion pipeline powered by AWS Lambda and SQS for high-volume content processing.
- Secure content storage with granular, owner-only access policies enforced via AWS IAM and S3.
- Federated identity support (Google, Apple, Facebook) for seamless and secure user onboarding.
- Global low-latency delivery through AWS CloudFront CDN.
- Asynchronous, decoupled architecture capable of handling traffic spikes without performance degradation.
- Built-in rental and ownership limitation logic for copyrighted digital content.
- Centralized logging and monitoring via AWS CloudWatch for full operational visibility.
- Mobile-optimized reading experience powered by the ePuBear SDK for iOS and Android.
- Architecture designed to scale to virtually unlimited concurrent users, limited only by cloud resource allocation.
Platform Features
- Scheduled scanning of numerous news portals using browser automation
- Topic- and keyword-based selection of relevant articles
- Concise summaries forged for faster consumption of information
- Storage and retrieval of previously processed articles
- Instant delivery of updates and reports via a Telegram bot
Technology Stack
We selected the following technology stack to meet the performance, scalability, and real-time analytics requirements of the AI blockchain consultant:
Compute (Serverless)
AWS Lambda
Orchestration / Queuing
- AWS SQS (Simple Queue Service)
Storage (Content)
AWS S3 with Owner-Only Policies
Identity & Access
AWS IAM + AWS Federations (Google, Apple, Facebook)
Content Delivery
AWS CloudFront (CDN)
Notifications
- AWS SNS (Simple Notification Service)
Mobile Reader SDK
- ePuBear (by SCAND)
Observability
- AWS CloudWatch
Core Team
- Serverless / Cloud Architects: Designed event-driven AWS architecture and defined secure IAM policies.
- Backend Developers: Implemented Lambda functions and core conversion logic using Python and Node.js.
- Mobile App Developers: Integrated the C++-based ePuBear SDK into native iOS and Android applications.
- Identity Experts: Managed OAuth and OpenID Connect implementation for secure federated authentication.
- DevOps / SRE Engineers: Set up CloudWatch monitoring and optimized CloudFront performance.
Results
The platform was successfully launched as a fully serverless digital publishing ecosystem capable of supporting global audiences with high availability and elastic scalability. By eliminating traditional infrastructure constraints and automating content workflows, the client significantly reduced operational complexity while accelerating content expansion and market responsiveness.
In particular, the project delivered the following outcomes:
- Dramatic reduction in infrastructure and operational costs due to a true pay-as-you-go model.
- Instant scalability during traffic spikes without manual intervention or performance degradation.
- Faster onboarding of new digital content through automated PDF-to-ePub conversion.
- Secure enforcement of ownership and rental limitations across global markets.
- Improved user acquisition and retention благодаря seamless SSO and high-performance mobile reading experience.
- A resilient, cloud-native architecture ready to support international growth and expanding content libraries.