How do I authenticate with SDK credentials on AWS using Go?

package main

import (
    "fmt"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/s3"
)

func main() {
    // Create a new session using SDK credentials
    sess, err := session.NewSession(&aws.Config{
        Region: aws.String("us-west-2")},
    )

    if err != nil {
        fmt.Println("Error creating session:", err)
        return
    }

    // Create S3 service client
    svc := s3.New(sess)

    // Example: List S3 buckets
    result, err := svc.ListBuckets(nil)
    if err != nil {
        fmt.Println("Error listing buckets:", err)
        return
    }

    // Print bucket names
    fmt.Println("Buckets:")
    for _, b := range result.Buckets {
        fmt.Printf("* %s\n", aws.StringValue(b.Name))
    }
}