Here's how to properly use the Amazon S3 v3 API 1. Here's how to properly use the Amazon S3 v3 API: Import the necessary modules: TypeScript import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3'; Create an S3Client instance: TypeScript const client = new S3Client({ region: 'your-region', // Replace with your AWS region credentials: { accessKeyId: 'your-access-key-id', // Replace with your access key ID secretAccessKey: 'your-secret-access-key', // Replace with your access key secret }, }); Create a PutObjectCommand command: TypeScript const command = new PutObjectCommand({ Bucket: 'your-bucket-name', // Replace with your bucket name Key: 'your-object-key', // Replace with the desired object key (filename) Body: 'your-file-data', // Replace with the file data (e.g., a buffer, string, or stream) ContentType: 'your-content-type', // Optional. Example: 'image/jpeg' }); Send the command to Amazon S3 TypeScript client.send(command) .then((response) => { console.log('File uploaded successfully:', response); }) .catch((error) => { console.error('Error uploading file:', error); }); 2. Example with HTML file TypeScript import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3'; // ... other code ... async uploadFile(file: File, bucketName: string, objectKey: string, contentType: string) { const client = new S3Client({ region: 'your-region', credentials: { accessKeyId: 'your-access-key-id', secretAccessKey: 'your-secret-access-key', }, }); const command = new PutObjectCommand({ Bucket: bucketName, Key: objectKey, Body: file, ContentType: contentType, }); try { const response = await client.send(command); console.log('File uploaded successfully:', response); return response; } catch (error) { console.error('Error uploading file:', error); throw error; } } //Example of use in an Angular component. //In your HTML code, you must have an input of type file. // onFileSelected(event: any) { const file = event.target.files[0]; if(file){ this.uploadFile(file, 'your-bucket-name', file.name, file.type).then(()=>{ // handle success. }).catch(()=>{ // handle error. }); } } 3. Key Points The AWS SDK v3 is modular, allowing you to import specific commands like PutObjectCommand. The Body property of PutObjectCommand accepts various data types, including Buffer, String, and Stream. Always handle errors with try...catch or .catch(). Never hard-code your credentials into client-side code.