AWS, Cloud Computing

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A Guide to Implement Intelligent Search with Amazon Kendra

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Businesses and organizations generate vast amounts of data. Effectively harnessing this data to derive meaningful insights and provide quick access to relevant information is crucial for success. Traditional search engines often struggle to deliver accurate results, especially when dealing with unstructured data or complex queries. This is where Amazon Kendra, an intelligent search service powered by machine learning, comes into play.

In this blog post, we will walk you through implementing intelligent search using Amazon Kendra. We will cover setting up the service, data ingestion, customizing search results, and integrating the search functionality into your applications.

Introduction to Amazon Kendra

Amazon Kendra is a machine learning-powered enterprise search service that Amazon Web Services (AWS) offers. It is designed to make it easier for organizations to search, discover, and access information within their data repositories and documents.

Amazon Kendra leverages natural language understanding (NLU) and machine learning to provide more accurate and contextually relevant search results.

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  • An AWS account: If you don’t have an AWS account, sign up for one at
  • Basic AWS services knowledge, especially AWS IAM (Identity and Access Management) and AWS Lambda.
  • Sample data: For this blog, we’ll assume you have some unstructured and structured data available that you want to index and search.

Step-by-Step Guide

Step 1: Create an Amazon Kendra Index

  • Go to the AWS Management Console and navigate to the Amazon Kendra service.
  • Click on “Create index” and provide a name and description for your index.
  • Select the data sources you want Amazon Kendra to index. You can choose from various options like Amazon S3, SharePoint, Amazon RDS, and more.
  • Configure the access permissions for the data sources, ensuring that Amazon Kendra has the necessary read permissions.
  • Review the settings and create the index.


Step 2: Ingest Data into Amazon Kendra

  • Depending on the data source you selected, follow the instructions to connect Kendra to your data repositories.
  • Define the schema for your data. This step is essential for extracting structured information from your unstructured data sources.
  • Configure the data source sync schedule to ensure that Amazon Kendra stays updated with changes in your data.
  • Initiate the data ingestion process and wait for Amazon Kendra to index the documents.

To ensure high-quality search results, consider the following tips during data ingestion:

  • Pre-process Data: Clean and pre-process the data before ingestion to remove irrelevant information, perform entity recognition, and improve the overall search experience.
  • Optimize Document Format: Amazon Kendra supports various document formats, including PDF, HTML, Word, and plain text. Convert documents into formats that best suit your needs and ensure accurate text extraction.
  • Document Metadata: Attach relevant metadata to each document, such as title, author, date, and tags. This metadata will aid in refining search results and creating custom result groups.


Step 3: Train Amazon Kendra

  • Amazon Kendra uses machine learning algorithms to understand the context and intent of user queries. To train Amazon Kendra effectively, you can provide example queries and associate them with relevant documents.
  • Use the Amazon Kendra Query Suggestions feature to add frequently searched terms to improve user experience.
  • To improve Amazon Kendra’s search performance, focus on the following aspects during the training phase:
  • Query Clustering: Group similar user queries to improve relevance tuning. Analyze query logs and associate related queries with the same document result.
  • Active Learning: Utilize active learning to solicit user feedback on search results. This feedback can be used to refine and train Amazon Kendra iteratively.

Step 4: Customize Search Results

  • You can create custom result groups to organize search results into categories, such as articles, FAQs, or manuals. This helps users find information more easily.
  • Configure relevance tuning to fine-tune the search results based on user feedback and query patterns.


Step 5: Implement Search in Your Application

  • You can use the Amazon Kendra Query API or SDKs available for various programming languages to integrate Amazon Kendra into your application.
  • Authenticate your application with AWS IAM credentials to access the Kendra service securely.
  • Implement your application’s search functionality, using user queries to retrieve relevant results from Amazon Kendra.

Step 6: Monitor and Optimize

  • Regularly monitor the search performance, including query success rates and user feedback.
  • Use the Amazon Kendra Usage Reports to gather insights into how users interact with your search service.
  • Continuously optimize the search experience by refining the training data and relevance tuning based on user feedback.


Amazon Kendra offers a powerful solution to implement intelligent search capabilities in your applications. By leveraging machine learning algorithms and a wide range of data sources, Amazon Kendra can deliver accurate and relevant search results for even the most complex queries.

In this blog post, we have covered the essential steps to implement Amazon Kendra, from creating an index and ingesting data to customizing search results and integrating the service into your application. Now it’s time for you to explore the potential of intelligent search with Amazon Kendra and enhance the search experience for your users.

Drop a query if you have any questions regarding Amazon Kendra, and we will get back to you quickly.

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1. What types of data sources can Amazon Kendra index?

ANS: – Amazon Kendra can index various data sources, including unstructured text, structured data, FAQs, manuals, websites, SharePoint, Amazon S3 buckets, relational databases (RDS), and more.

2. How can I create an Amazon Kendra index?

ANS: – To create an Amazon Kendra index, access the AWS Management Console, navigate to the Amazon Kendra service, click “Create index,” provide a name and description, choose data sources to index, configure access permissions, and create the index.

3. How does Amazon Kendra handle different languages?

ANS: – Amazon Kendra supports multiple languages, and you can specify the primary language of the indexed documents during the index creation process. This allows Amazon Kendra to understand and process queries in different languages accurately.


Sunil H G is a highly skilled and motivated Research Associate at CloudThat. He is an expert in working with popular data analysis and visualization libraries such as Pandas, Numpy, Matplotlib, and Seaborn. He has a strong background in data science and can effectively communicate complex data insights to both technical and non-technical audiences. Sunil's dedication to continuous learning, problem-solving skills, and passion for data-driven solutions make him a valuable asset to any team.



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