A simple node program that uses the fast-speedtest-api npm package to test internet bandwidth and publishes it to CloudWatch

bandwidth-speed-test-cloudwatch.js

const FastSpeedtest = require("fast-speedtest-api")
const AWS = require('aws-sdk')
AWS.config.update({region: 'us-east-1'})
const cloudwatch = new AWS.CloudWatch()

let speedtest = new FastSpeedtest({
    token: "INSERT-YOUR-TOKEN-HERE",
    verbose: false,
    timeout: 10000,
    https: true,
    urlCount: 5,
    bufferSize: 8,
    unit: FastSpeedtest.UNITS.Mbps
})

speedtest.getSpeed().then((s) => {
  console.log(`Speed: ${s} Mbps`)

  let cloudWatchPayload = {
    MetricData: [
      {
        MetricName: 'bandwidth_mbps',
        StorageResolution: 1,
        Timestamp: new Date(),
        Unit: "Megabytes/Second",
        Value: s
      },
    ],
    Namespace: 'FastSpeedtest'
  }

  cloudwatch.putMetricData(cloudWatchPayload, (err, response) => {
    if(err){
      console.log(`Failed to publish speed test metrics to CloudWatch: ${err}`, err.stack)
    }else{
      console.log(`CloudWatch publish response: ${JSON.stringify(response)}`)
    }
  })
}).catch(e => {
  console.error(`An error occurred when attempting to run the speed test: ${e.message}`)
})

Uses fast.com via fast-speedtest-api