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Receive real-time notifications in a web application from an AWS lambda function

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I need to implement a real-time notification functionality in a web application from an AWS lambda function. How to achieve this functionality? We have an AWS lambda function that gets triggered on an SNS event. I need to show this SNS event details in the web app through a real-time API in Node JS and send it to the web application. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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... AWS AppSync can push real-time data updates over Websockets to millions of clients. AppSync may help, check this aws service please.

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