This content originally appeared on DEV Community and was authored by Gopi Krishnan VM
Introduction
Looking for an easy way to deploy your .NET 8 API on AWS without managing servers? AWS Fargate is a serverless container service that lets you do just that โ no need to set up EC2 instances or deal with Kubernetes!
In this guide, Iโll walk you through how to deploy a .NET 8 API using Docker on AWS Fargate in just 7 minutes. This is a step-by-step process, perfect for both beginners and experienced developers.
๐ Prefer a video tutorial? Watch my full YouTube guide here:
๐ How to Deploy .NET 8 API on AWS Fargate (7-Min Tutorial): Link
Why Use AWS Fargate for .NET APIs?
Hereโs why AWS Fargate is one of the best ways to host a .NET 8 API:
โ
No Servers to Manage โ AWS runs and scales everything for you.
โ
Pay Only for What You Use โ No need to keep EC2 instances running. โ
Auto-Scaling โ Can handle sudden traffic spikes automatically.
โ
Easy Setup โ Just upload your Docker image and go live!
Step-by-Step: Deploy .NET 8 API on AWS Fargate
Letโs go through the steps one by one.
Step 1: Create an ECS Cluster
AWS ECS (Elastic Container Service) needs a Cluster to organize and manage your containers.
๐ Think of a Cluster as a โworkspaceโ where your API will run.
โ
Go to AWS ECS Console โ Clusters โ Create Cluster.
โ
Select Networking only (AWS Fargate) since we donโt need EC2.
โ
Name it something like dotnet8-cluster and click Create.
Your cluster is now ready! ๐
Step 2: Create a Task Definition
A Task Definition is like a blueprint that tells AWS how to run your container.
โ
Go to ECS โ Task Definitions โ Create New Task Definition.
โ
Choose Fargate as the launch type.
โ
Give it a name (e.g., dotnet8-task).
โ
Add your Docker image URI from AWS ECR (Elastic Container Registry).
โ
Set Port Mapping to 80 (so users can access the API).
โ
Click Create.
Now AWS knows how to run your API! ๐
Step 3: Create a Service
A Service ensures that your API keeps running all the time.
โ
Go to Clusters โ Services โ Create Service.
โ
Select your Task Definition (dotnet8-task).
โ
Set Number of Tasks = 1 (this means only one instance runs).
โ
Choose your VPC and subnets (AWS will suggest the right ones).
โ
Enable Public IP (so we can access the API from the internet).
โ
Click Create Service.
Now AWS will always keep your API running and restart it if needed!
Step 4: Configure Security Group (Allow Traffic to API)
By default, AWS blocks outside traffic, so we need to open port 80 to allow users to access the API.
โ
Go to EC2 โ Security Groups.
โ
Find the group attached to your ECS Service.
โ
Click Inbound Rules โ Edit โ Add a new rule:
Type: HTTP
Port: 80
Source: Anywhere (0.0.0.0/0) (or your specific IP for security).
โ
Click Save Rules.
Now, the API can be accessed from anywhere! ๐
Step 5: Test Your API
โ
Go to ECS โ Clusters โ Tasks, and find your running Task.
โ
Copy the Public IP Address and open it in a browser or Postman.
๐ If everything is correct, your API should respond!
Troubleshooting Common Issues
โ API is not reachable?
โ
Make sure port 80 is open in Security Groups.
โ
Double-check that your Docker image is correctly set up.
โ
Ensure that you enabled Public IP when creating the Service.
โ
Make sure your API is listening on port 80 inside the Docker container.
๐ฅ Watch the Full Tutorial on YouTube!
๐ Want to see this setup in action? Watch the full step-by-step tutorial on YouTube:
๐ How to Deploy .NET 8 API on AWS Fargate (7-Min Tutorial)
๐ฌ Have questions? Leave a comment on the video, and Iโll personally help you out!
If this article helped you, clap ๐ and share so more developers can learn how to deploy .NET 8 APIs on AWS Fargate easily! ๐
This content originally appeared on DEV Community and was authored by Gopi Krishnan VM
Gopi Krishnan VM | Sciencx (2025-03-18T17:05:50+00:00) How to Deploy a .NET 8 Docker API on AWS Fargate in 7 Minutes ๐. Retrieved from https://www.scien.cx/2025/03/18/how-to-deploy-a-net-8-docker-api-on-aws-fargate-in-7-minutes-%f0%9f%9a%80/
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