What is iam roles for services ?

 What is iam roles for services ? 

IAM (Identity and Access Management) roles for services are a way to grant AWS services access to AWS resources. By assigning an IAM role to a service, you can allow the service to interact with other AWS services and resources on your behalf, without having to use long-term AWS credentials like access keys.

For example, you can create an IAM role that allows an EC2 instance to access an S3 bucket, or a Lambda function to access a DynamoDB table. The IAM role provides a secure way to delegate permissions, without having to share any AWS credentials.

To create an IAM role for a service, you define a set of permissions in an IAM policy and then attach the policy to the role. You can then assign the role to the service when you launch the service, or you can change the role assignment for an existing service.

Using IAM roles for services is a best practice for security and resource management in AWS, as it reduces the risk of exposing sensitive information, and makes it easier to manage the permissions for your services.