Do this: 1. Open AWS and create an account. 2. Go to the EC2 section, spin up an instance, generate the passkey, SSH into it from your local system. Just play around things. 3. Decided to launch something? Enter the security group like which port should be open usually, http, https and ssh. 4. Now you will get an IP address, go to that and you will see your application. 5. You started to scale it. 6. Create another EC2 instance and use the AWS application loadbalancers to manage these. 7. You are too lazy to add more instances, try AWS auto scaling group, define your min, max number of servers and when it hits a threshold it will create servers for you. For doing this you have to create an image to spin up new EC2 with our application. 8. You are getting 1 million+ requests and adding it to your database every second will use all the bandwidth. Use AWS kafka to have high throughput. Your db has high storage but low throughput, kafka/rabbitmq solves this. 9. You need to store non text datas, like media, use S3, create a nodejs script to connect to S3 and make a file uploader. 10. You are too lazy to manage servers, use a serverless function like AWS lambda, but it will have some restrictions as it's not you who manages it. 11. You are a human you don't need to know a to z of AWS. I just know this much and for me this gets the job done. When you get into some use case, then start looking if that service you want exists in AWS. Now you are a pro and you don't want to Couple with AWS. Start to self host your application, buy a vpc do everything from scratch or use coolify to do it for you. I hope this helps.