Hi Vibhanshu, When it comes to serving a static website, single page application, S3 or a combination of S3/CloudFront, is a great fit. There is no server that you need to manage, and S3 is as resilient and scalable at it gets. Moreover, it's certainly the most cost-effective solution you'll be able to come up with. Is your application fully static or does it come with compute needs?

• Regardless, I would highly discourage you from running anything directly on a custom EC2 instance of your own, as this will from the get-go but also over time, come with high maintenance costs.
• Elastic Beanstalk, (not to be mistaken with EBS, which acronym stands for Elastic Block Storage), on the contrary, is a rather powerful way to manage your applications and environments. Either via the CLI or through the console, you can easily configure your environment variables, load balancers, certificates, events/thresholds causing your instances counts to scale up/down, steaming of logs...
• Elastic Beanstalk supports by default a couple of language, but these don't always allow you to run the version/dependency you need. For best decoupling from the underlying instances, you might want to look at leveraging Docker (Elastic Beanstalk has Docker-compatible AMIs), so you are in control of the stack you application runs on.