Upload the file directly from the client (browser/mobile) to S3 using presigned URLs.

const AWS = require('aws-sdk');

const s3 = new AWS.S3();

const getSignedUrl = async (req, res) => {

const { key, contentType } = req.body;

const params = {

Bucket: 'followwork',

Key: key,

ContentType: contentType,

Expires: 60, // URL valid for 60s

};

const url = await s3.getSignedUrlPromise('putObject', params);

res.json({ uploadUrl: url });

};