Heeki Park, a senior consultant at AWS, gives a presentation on serverless computing using AWS Lambda. The presentation introduces serverless concepts, demonstrates common use cases for AWS Lambda including web applications, data processing, and IT automation. It also demonstrates how to use AWS Lambda, and how it integrates with other AWS services like API Gateway, Step Functions, Lex and others.

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Getting Started with AWS
Lambda and Serverless
Computing
H e e k i P a r k – S e n i o r C o n s u l t a n t – A W S

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About me:
Heeki Park – heeki@amazon.com
• Senior Consultant, Professional Services
• Focusing on Cloud-native Application Architecture
• Previously:
• Principal Engineer, FusionStorm (2007-2016)
• Storage Administrator, Credit Suisse (2002-2006)
• University of Pennsylvania, Computer Science and Engineering (2002)
• Gamer, father of 3 kids (B:7, G:5, G:3)

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Why are we
here today?

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No servers to provision
or manage
Scales with usage
Never pay for idle Availability and fault
tolerance built in
Serverless means…

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SERVICES (ANYTHING)
Changes in
data state
Requests to
endpoints
Changes in
resource state
EVENT SOURCE FUNCTION
Node.js
Python
Java
C#
Go
Serverless applications

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Common serverless use cases
Web
Applications
• Static
websites
• Complex web
apps
• Packages for
Flask and
Express
Data
Processing
• Real time
• MapReduce
• Batch
Chatbots
• Powering
chatbot logic
Backends
• Apps &
services
• Mobile
• IoT
</></>
Amazon
Alexa
• Powering
voice-enabled
apps
• Alexa Skills
Kit
IT
Automation
• Policy engines
• Extending
AWS services
• Infrastructure
management

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DEMO!

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Using AWS Lambda
Bring your own code
• Node.js, Java, Python,
C#, Go
• Bring your own libraries
(even native ones)
Simple resource model
• Select power rating from
128 MB to 3 GB
• CPU and network
allocated proportionately
Flexible use
• Synchronous or
asynchronous
• Integrated with other
AWS services
Flexible authorization
• Securely grant access to
resources and VPCs
• Fine-grained control for
invoking your functions

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Using AWS Lambda
Authoring functions
• WYSIWYG editor or
upload packaged .zip
• Third-party plugins
(Eclipse, Visual Studio)
Monitoring and logging
• Metrics for requests,
errors, and throttles
• Built-in logs to Amazon
CloudWatch Logs
Programming model
• Use processes, threads,
/tmp, sockets normally
• AWS SDK built in
(Python and Node.js)
Stateless
• Persist data using
external storage
• No affinity or access to
underlying infrastructure

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Fine-Grained Pricing
Buy compute time in 100ms increments
Low request charge
No hourly, daily, or monthly minimums
No per-device fees
Never pay for idle
Free Tier
1M requests and 400,000 GB-s of compute.
Every month, every customer.

11. Lambda execution model
Synchronous (push) Asynchronous (event) Stream-based
Amazon
API Gateway
AWSLambda
function
Amazon
DynamoDBAmazon
SNS
/order
AWSLambda
function
Amazon
S3
reqs
Amazon
Kinesis
changes
AWSLambda
service
function

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AmazonS3 Amazon
DynamoDB
Amazon
Kinesis
AWS
CloudFormation
AWSCloudTrail Amazon
CloudWatch
Amazon
Cognito
AmazonSNSAmazon
SES
Cronevents
DATA STORES ENDPOINTS
DEVELOPMENT AND MANAGEMENT TOOLS EVENT/MESSAGE SERVICES
Event sources that trigger AWS Lambda
… and more!
AWS
CodeCommit
Amazon
API Gateway
Amazon
Alexa
AWSIoT AWSStep
Functions

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Lambda permissions model
Fine grained security controls for both
execution and invocation:
Execution policies:
• Define what AWS resources/API calls can this
function access via IAM
• Used in streaming invocations
• E.g. “Lambda function A can read from
DynamoDB table users”
Function policies:
• Used for sync and async invocations
• E.g. “Actions on bucket X can invoke Lambda
function Z"
• Resource policies allow for cross account
access

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Amazon API Gateway
Create a unified
API frontend for
multiple micro-
services
Authenticate and
authorize
requests to a
backend
DDoS protection
and throttling for
your backend
Throttle, meter,
and monetize API
usage by 3rd
party developers

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Amazon API Gateway
Internet
Mobile Apps
Websites
Services
AWS Lambda
functions
AWS
All publicly
accessible
endpoints
Amazon
CloudWatch
Monitoring
Amazon
CloudFront
Any other
AWS service
Endpoints on
Amazon EC2
AWS Step
Functions
Regional API Endpoints

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AWS Step Functions
“Serverless” workflow management with
zero administration:
• Makes it easy to coordinate the
components of distributed applications
and microservices using visual
workflows
• Automatically triggers and tracks each
step, and retries when there are errors,
so your application executes in order
and as expected
• Logs the state of each step, so when
things do go wrong, you can diagnose
and debug problems quickly
Task
Choice
Failure capture
Parallel Tasks

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Lambda + Kinesis
Amazon
Kinesis
AWS
Lambda 1
Amazon
CloudWatch
Amazon
DynamoDB
AWS
Lambda 2 Amazon
S3
Real Time Data Processing:
1. Real-time event data sent to Amazon Kinesis,
allows multiple AWS Lambda functions to
process the same events.
2. In AWS Lambda, Function 1 processes and
aggregates data from incoming events, then
stores result data in Amazon DynamoDB
3. Lambda Function 1 also sends values to
Amazon CloudWatch for simple monitoring of
metrics.
4. In AWS Lambda function, Function 2 does data
manipulation of incoming events and stores
results in Amazon S3
https://s3.amazonaws.com/awslambda-reference-architectures/stream-processing/lambda-refarch-streamprocessing.pdf

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Amazon Lex
Service for building conversational interfaces
into any application using voice and text
Automatic speech recognition (ASR) for
converting speech to text
Natural language understanding (NLU) to
recognize the intent of messages
Powered by the same deep learning
technology as Alexa
Fully managed service

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Build PCI and HIPAA compliant serverless applications!
Serverless platform services that can be used in both:
AW S
Lam bda
Am azon
S3
Am azon
CloudFront
Am azon
Dynam oDB
Amazon
Kinesis
Streams
Am azon
Cognito
Am azon API
G atew ay
Am azon
SNS

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What is a Serverless Web Application?
S3 stores all of your static
content: CSS, JS, Images, etc.
You would typically front this
with a CDN such as Amazon
CloudFront
API Gateway handles all of
your application routing. It can
handle authentication and
authorization, throttling, DDOS
protection and more
Lambda runs all of the logic
behind your website and
interfaces with databases,
other backend services or
anything else your site needs
Amazon S3
Amazon
API Gateway
AWS Lambda
Amazon
CloudFront

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AWS Serverless Application Repository

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Start with AWS CodeStar

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AWS Cloud9

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DEMO!

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aws.amazon.com/serverless

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Heeki Park
heeki@amazon.comhttps://www.flickr.com /photos/theredproject/3302110152/

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