What is #serverless, even?

# What is #serverless, even?
### with Pam Selle, [@pamasaur](https://twitter.com/pamasaur) [thewebivore.com](http://thewebivore.com)
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![IOpipe logo](images/iopipe.png)

https://iopipe.com
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Analytics and distributed tracing service. Sign up!
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# What is serverless, even?
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# Running your code in the cloud, but not giving a #$@* about servers

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![no cloud](images/no-cloud.png)
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_However_
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What if you don't care about the computer you run on
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What if that computer "just" runs your code on demand?
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# Enter: FaaS

(Functions as a Service)

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# FaaS options

- AWS Lambda
- Google Cloud Functions
- Azure Functions
- IBM OpenWhisk
- Webtask.io

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## Backstory

AWS released Lambda in 2014, considered groundbreaking:

- New pricing model (usage vs monthly billing)
- Functions scale out of the box
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## How's it work?

Containers and stuff!

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## Pricing

First *1 million requests per month are free*

$0.20/1MM after ($0.0000002 per request)
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# #serverless ≈ FaaS ~ Lambda
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Serverless tends towards the architecture,
FaaS/Lambda tends towards the execution
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# Anatomy of a Lambda Function
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```javascript
console.log('starting function')
exports.handler = function(event, context, callback) {
  console.log('processing event: %j', event)
  // callback(error, success)
  callback(null, { hello: 'world' })
  // context.fail()
  // context.succeed()
}

```
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## Invoking Lambda functions

- API Gateway
- SNS (ex. web hooks)
- Cloudwatch Schedule
- Alexa
- S3
- Dynamo
- ... and more

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![boo Lambda UI](images/lambda-init.png)
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## Tools

- [Serverless (formerly JAWS) framework](http://serverless.com/)
- [Apex](http://apex.run/)
- [Shep](https://github.com/bustlelabs/shep)
- Enthusiastically constructed gulp files

???
Serverless is a "framework," it's popular
Apex is faster and gets out of my way

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# Make your own!
`apex init`

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Demo
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## Recent project

[Turing-IncomTWEET](https://github.com/turing-incomplete/turing-incomtweet)

Auto-schedules our episode tweets to Buffer so I don't have to log into Tweetdeck
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Slides at
[pselle.github.io/what-is-serverless](http://pselle.github.io/what-is-serverless)
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# Thank you!

### [@pamasaur](https://twitter.com/pamasaur)

### [thewebivore.com](http://thewebivore.com)

### [IOpipe](https://iopipe.com)

### [turing.cool](http://turing.cool) | [JavaScript Air](https://javascriptair.com/)