클라우드 기반 앱 현대화를 위한 5가지 체크리스트 - 윤석찬 :: AWS 현대적 애플리케이션 개발

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윤석찬 / AWS 수석 테크에반젤리스트
클라우드 기반 앱 현대화를 위한 5가지
체크리스트

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고지 사항(Disclaimer)

Personalization
Customer tracking
New channels direct to customer
More things, more scale, rapid change
New Needs

Modern application development
creates competitive differentiation
by enabling rapid innovation

Capabilitiesofamodern application
Secure Resilient Elastic
Modular Automated Interoperable

Assess and
prioritize,
app by app
Pick path to
modernization
Lift & shift:
data center → EC2
Re-platform:
VMs → containers
Refactor:
monolith → microservices
Re-invent:
host fleets → serverless
Modern application development: ajourney withmany

OptionsAvailable
Re-platform
AWS Fargate
Re-invent
AWS Lambda
Re-factor
AWS Step Functions
Re-Host
Amazon EC2

1

Enablesecurityandcomplianceacrosstheentireapplifecycle
Securingthelifecycleaddresses blindspotswithout
slowingdown innovation
Authenticate
Prevent unauthorized
access with strong
access control
Authorize
Implement role-based
access control using
flexible policies
Audit & Govern
Evaluate app behavior &
ensure compliance
requirements are met
Validate
Verify each step to ensure
solutions work only as
intended
P
U
B
L
I
C
S
E
C
T
O
R
S
U
M
M
I
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2
0
1
9
,
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o
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e
s
.
A
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r
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g

Modern application - 5checklists
 Structure apps as collections of microservices
 Build with serverless technologies as much as possible
 Use code to model applications and infrastructure
 Rapidly release high-quality features with CI/CD
 Gain insights into application behavior with monitoring

Structureappsascollectionsofmicroservices
When theimpact ofchangeissmall,
releasevelocitycan increase
Monolithic application
Does everything
Shared release pipeline
Rigid scaling
High impact of change
Hard to adopt new technologies
Microservices
Does one thing
Independent deployments
Independent scaling
Small impact of change
Choice of technology

Properties ofmicroservices
• Independent
• Individually Deployed & Scaled
• Polyglot
• Modular - Easily Replaced
• Decentralized
Microservices

DesignConcepts
• Use managed services
• Focus on writing your business logic
(not on maintaining infrastructure)
• Loosely coupled & event driven
• Simplify delivery and discovery
AWS Lambda
AWS Fargate

APIsanddecoupled communications enable
automation andimproves reliability
FUNCTION
API
API
MICROSERVICE
FUNCTION
EVENT
MICROSERVICE
EVENT
API
MICROSERVICE
APPLICATION

Commondatacategoriesandusecases
Relational
Referential
integrity, ACID
transactions,
schema-
on-write
Lift and shift, ERP,
CRM, finance
Key-value
High
throughput, low-
latency reads
and writes,
endless scale
Real-time bidding,
shopping cart,
social, product
catalog, customer
preferences
Document
Store
documents and
quickly access
querying on any
attribute
Content
management,
personalization,
mobile
In-memory
Query by key
with
microsecond
latency
Leaderboards,
real-time analytics,
caching
Graph
Quickly and
easily create
and navigate
relationships
between
data
Fraud detection,
social networking,
recommendation
engine
Time-series
Collect, store,
and process
data sequenced
by time
IoT applications,
event tracking
Ledger
Complete,
immutable, and
verifiable history
of all changes to
application data
Systems
of record, supply
chain, health care,
registrations,
financial

2

Buildwithserverlesstechnologiesasmuchaspossible
Automation andabstraction frees you
No infrastructure to
provision or manage
Automatically scales
by unit of consumption
Pay for value
billing model
Highly available
and durable

Choiceofcomputeiscoretothetransformation
Serverless Containers
Long-running
Abstracts theOS
Fully-managed orchestration
Fully-managed cluster scaling
AWS Fargate
Serverless Functions
Event-driven
Many language runtimes
Data source integrations
No server management
AWS Lambda

AWScontainerserviceslandscape
Management
Deployment, Scheduling,
Scaling & Management of
containerized applications
Hosting
Where the containers run
Amazon Elastic
Container Service
Amazon Elastic
Container Service
for Kubernetes
Amazon EC2AWS Fargate
Image Registry
Container Image Repository
Amazon Elastic
Container Registry

Comparison ofoperational responsibility
AWS Lambda
Serverless functions
AWS Fargate
Serverless containers
ECS/EKS
Container-management as a service
EC2
Infrastructure-as-a-Service
More opinionated
Less opinionated
AWS manages Customer manages
• Data source integrations
• Physical hardware, software, networking,
and facilities
• Provisioning
• Application code
• Container orchestration, provisioning
• Cluster scaling
• Physical hardware, host OS/kernel,
networking, and facilities
• Security config and updates, network config,
management tasks
• Container orchestration control plane
• Physical hardware software,
• Work clusters
firewall, management tasks
• Physical hardware software,
• Scaling
management tasks
• Provisioning, managing scaling and
patching of servers

Serverless architecturesprovide thegreatestagility
withtheleasteffort
business value
serverless everything
CUSTOMER
AWS
Business logic
API
Messaging & Orchestration
Storage & Databases
Compute
Physical Infrastructure

AmazonAPIGateway
Fully managed service that makes it easy for
developers to publish, maintain, monitor, and
secureAPIs at any scale
• NativeAWS Service Integration
• Stage and version management
• API Authentication
• WebSockets support

Coordinating multipleserviceswithworkflows increases
agility,productivityandflexibility
Track status of data
and execution
Remove
redundant code

3

Usecodetomodelapplicationsandinfrastructure
Treatingeverythingassoftwareincreases thespeedand
agilityofinfrastructuredeployments
Design
Write application
code
Create infrastructure
templates
Create stacks Iterate

Infrastructureascode
Declarative
I tell you
what I need
I tell you
what to do
Imperative

Infrastructureascodegoals
1. Make infrastructure changes repeatable and predictable
2. Release infrastructure changes using the same tools as code changes
3. Replicate production environment in a staging environment to enable
continuous testing

Model function environments withAWS
ServerlessApplication Model (SAM)
• Open source framework for building serverless
applications on AWS
• Shorthand syntax to express functions, APIs,
databases, and event source mappings
• Transforms and expands SAM syntax into AWS
CloudFormation syntax on deployment
• Supports all AWS CloudFormation resource types
https://aws.amazon.com/serverless/sam/

SAMtemplate
AWSTemplateFormatVersion: '2010-09-09’
Transform: AWS::Serverless-2016-10-31
Resources:
GetFunction:
Type: AWS::Serverless::Function
Properties:
Handler:
Runtime:
CodeUri:
index.get
nodejs8.10
src/
Policies:
- DynamoDBReadPolicy:
TableName: !Ref MyTable
Events:
GetResource:
Type: Api
Properties:
Path: /resource/{resourceId}
Method: get
MyTable:
Type: AWS::Serverless::SimpleTable
Just 20 lines to create:
• Lambda function
• IAM role
• API Gateway
• DynamoDB table

UseSAMCLItopackageanddeploySAMtemplates
sam build (--use-container)
sam package
sam deploy
sam publish
New
pip install --user aws-sam-cli
sam
sam
logs
validate
sam local
sam init

R © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Nestedapps tosimplifysolvingrecurring problems
Standard
Component
TweetSource:
Type: AWS::Serverless::Application
Properties:
Location:
ApplicationId: arn:aws:serverlessrepo:...
SemanticVersion: 2.0.0
Parameters:
Custom
Business
Logic
TweetProcessorFunctionName: !Ref MyFunction
SearchText: '#serverless -filter:nativeretweets’

4

Rapidlyreleasehigh-qualityfeatureswithCI/CD
TeamsthatpracticeCI/CD
shipmore codefaster,andwithmoreconfidence
5x
Lower change
failure rate
440x
Faster from
commit to deploy
46x
More frequent
deployments
44%
More time spent on
new features & code

Monolithdevelopment lifecycle
monitorreleasetestbuild
developers services
delivery pipelines

developers services
monitor
delivery pipelines
test releasebuild
Monolithdevelopment lifecycle

AWSCodeDeploy
• Automates code deployments to any instance and
Lambda
• Handles the complexity of updating your
applications
• Avoid downtime during application deployment
• Roll back automatically if failure detected
• Deploy to Amazon EC2, Lambda, or on-premises
servers

CodeDeploy-Lambda deployments
• Shifts traffic using Lambda function weighted aliases
• Choose canary (“shift 10% of traffic for 10 minutes, then shift rest”) or
linear (“shift 10% more traffic every 10 minutes”)
• Validation “hooks” enable testing at each stage of the deployment
• Fast rollback in seconds if case of hook failure or CloudWatch alarms
• Monitor deployment status and history via console, API, Amazon Simple
Notification Service (Amazon SNS) notifications, and CloudWatch
Events

CodeDeploy – Lambda deployments
Enable in your serverless application template
Resources:
GetFunction:
Type: AWS::Serverless::Function
Properties:
DeploymentPreference:
Type: Canary10Percent10Minutes
Alarms:
- !Ref ErrorsAlarm
Hooks:
PreTraffic: !Ref PreTrafficHook
Canary10Percent30Minutes
Linear10PercentEvery10Minutes
Linear10PercentEvery1Minute
AllAtOnce

5

Usemonitoringtooptimizeenduserexperience
Thefasteryouidentify issues,thefastertheycan be
resolved
Metrics, logs
and traces
Monitoring,
debugging and
alerts
Resource and
application
visibility
Real-time
insights
MONITORING
OBSERVABILITY

X-RayService

Benefits of usingAWSX-RaywithLambda
• X-Ray agent is natively built into Lambda.
• Identify initialization and cold starts in Lambda
• Pinpoint issues in downstream services called from your AWS
Lambda function.
• Happens with low latency in real-time. Can see traces in
seconds.

VisualizeServiceCallGraph (Lambda)

Identifyinitialization& coldstarts(Lambda)

Pinpoint errors (Lambda)

Keeps track of all your application components,
their locations, attributes, and health status.
• Define convenient names for all cloud
resources
• Discover resources with specific attributes
• Ensure only healthy resources are discovered
• Use highly available DNS and Regional API.
New:AWSCloudMap

AWS 현대적 애플리케이션 개발 관련 자료를 원하시면…
• 현대적 어플리케이션 e-book
• AWS 여정 가속화: 마이그레이션과 현대화
• 서버리스 우선 보고서로의 여정
• AWS 컨테이너를 사용한 현대화
• 그 밖에 동영상, 기술 백서 등
https://tinyurl.com/aws-
modern-apps-KR
지금 방문하세요! »
새롭게 만들어진 기술 백서 및 전자책을 자세히 살펴
현대화 과정을 가속화 시키세요.

현대화 과정을 가속화하세요.
IT 의사 결정자의 90 %가 클라우드 기술역량의 부족1 을 호소하고 있습니다.
클라우드 기술역량의 부족은 현대적 애플리케이션 개발에도 영향을 미칩니다.
AWS 교육 및 자격증과 함께 현대적 애플리케이션 개발 여정을 시작하시기 바랍니다.
현대적 애플리케이션의 설계, 구축 및 관리를 위한 기술역량을 개발하세요.
무료 디지털 교육 수강하기
AWS 무료 디지털 교육을 통해
약간의 시간과 노력으로
실질적인 클라우드 지식을
향상시킬 수 있습니다.
짧게는 10분부터 길게는 몇
시간까지 소요되는 다양한
온디맨드 교육 과정은 서버리스,
컨테이너 및 개발자 도구와 같은
특정 주제에 대한 이해를 넓히는
데 도움이 될 것입니다.
라이브, 실습, 강의실 교육 받기
대면 또는 가상 강의실 교육은
기술 역량을 심화하고자 하는
분들에게 보다 심층적인 교육을
제공합니다. 수업은 해당 분야의
전문가가 이끄는 프레젠테이션,
실습 랩 및 그룹 토론으로
구성되어 있습니다. 교육
과정에는 Developing on AWS 및
Advanced Developing on AWS가
있습니다.
현대적 애플리케이션 기술역량을
빠르게 램프업하기
자율적인 학습을 통해 지식
격차를 메우고 자신의 속도에
맞춰 새로운 주제를 학습할 수
있습니다. 특정한 기술에 대해
보다 깊이 알고자 하는 IT
전문가들을 위한 다양한 백서,
블로그 게시물, 영상, 웨비나,
모범 사례 등 다양한 리소스가
준비되어 있습니다. 더 알아보기.
1 451 Research, DemystifyingCloudTransformation:Where Enterprises Should Start, September 2019.

AWS 앱 현대화 및 개발 특집 온라인 세미나에
참석해주셔서 대단히 감사합니다.
저희가 준비한 내용, 어떻게 보셨나요?
더 나은 세미나를 위하여 설문을 꼭 작성해 주시기 바랍니다.
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클라우드 기반 앱 현대화를 위한 5가지 체크리스트 - 윤석찬 :: AWS 현대적 애플리케이션 개발

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