How to Build a Custom AWS CDK Construct for Automated Text Extraction Using Textract, Lambda, and DynamoDB

Amit Rai
8 min readOct 8, 2024

Learn how to easily create reusable AWS infrastructure using CDK custom constructs

CDK — Custom Construct

In today’s world, automating document processing is more important than ever, especially when dealing with large volumes of text-heavy documents like forms, invoices, and reports.

AWS Textract is a powerful service that automates the extraction of text and data from scanned documents, allowing businesses to reduce manual processing time. So creating such an application to boost your business is always challenging, but what if you could at least simplify the deployment of this functionality by building a custom, reusable infrastructure?

Yes! That’s exactly where custom constructs in AWS CDK can help you.

In this article, I’ll share how can we create a custom AWS CDK construct that automates text extraction from images using AWS Textract. I’ll break it down step by step and explain how to streamline the deployment process. If you’re new to custom constructs or AWS CDK, don’t worry — I’ll make it as approachable and straightforward as possible.

What is a Custom AWS CDK Construct?

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Amit Rai

AWS Architect | AWS DevOps | Developer | Generative AI | Enthusiastic Writer | www.linkedin.com/in/amitraikkr