Amazon Opensearch provides a fast search experience for your applications, websites, and data lake catalogs, allowing your users to quickly find relevant data. Amazon Elasticsearch Service delivers high-quality and personalized search results with industry-leading scalability and security
Amazon OpenSearch Service provisions all the resources for your cluster and launches it. It also automatically detects and replaces failed OpenSearch Service nodes, reducing the overhead associated with self-managed infrastructures. You can scale your cluster with a single API call or a few clicks in the console.
DynamoDB is a fully managed, serverless, key-value NoSQL database designed to run high-performance applications at any scale. DynamoDB offers built-in security, continuous backups, automated multi-Region replication, in-memory caching, and data import and export tools. You can configure an Amazon OpenSearch Domain to Search DynamoDB Data - https://docs.aws.amazon.com/cloudsearch/latest/developerguide/searching-dynamodb-data.html.
Tutorial: Creating a search application with Amazon OpenSearch Service https://docs.aws.amazon.com/opensearch-service/latest/developerguide/search-example.html
A customer success story you may be interested in: [Sony Interactive Entertainment Redefines Online Multiplayer Experiences on Playstation 5 on AWS]
Price difference between DynamoDB and MongoDB for Video on Demand App
Open Search Cross Cluster Replicationasked 8 months ago
How to move data from Redshift to Open Search using AWS Glue ?asked 2 months ago
How do I find out why I'm being charged for app sync and open search service?asked 7 months ago
If i enable automated backups for open-search Cluster what happens if it gets crashedAccepted Answerasked a month ago
What is best database or search service to store and search for millions of ip addresses?Accepted Answerasked 4 years ago
OpenSearch pagination - from/size vs Search After for number of hits less than 10kasked 6 months ago
Should I Use Angolia or OpenSearch instead of DynamoDB? If so in what case.
Elastic Search pricing: Pay as you go or not?asked a year ago
General latency details of Elastic search (Now Amazon Open Search)asked 22 days ago