AWS Customer Presentation - Twilio

twilio is a Cloud Service for Web Developers to build and scale Voice Communication Apps that Make or Receive Phone Calls, using only Basic Web Development skills

Pay Per Call Tracking Private Calling Outbound Alerts Improve Customer Service Coordinate Employees Voicemail Boxes So What Are Voice Applications? Reverse 911 Alerts Intelligent Call Routing Voice User Generated Content Company PBX Information Hot Line

uLaw Transcoding Carriers Integration PSTN Channel Capacity DID Acquisition SIP Compatibility Building Voice Applications Used to be Codecs HARD QOS Realtime CPU Capacity Planning DTMF Realtime Networking Multiyear Carrier Contracts

Telecom Goo HTTP XML PSTN MP3, wav, etc. CLECs Twilio SIP uLaw GSM G.711 HARD EASY!

Customers & Brands

Platform Launched Late 2008 Thousands of Devs Hundreds of Live Apps

Simple, Powerful API Only Five Building Blocks. Scales Automatically 10 or 10,000 Simultaneous Calls. Pay-As-You-Go Pricing No upfront, no commitment. Pay only for what you use.

Powerful ^ Simple API yP BX pan C om ail oi cem V ou ting Ca ll R

Pa y-As-You-Go ^ Simple Pricing Calls Phone Numbers 3¢ / min $5 / mo No Contract No Shenanigans

Pricing Voice Applications # “Ports” (Phone Lines)

Pricing Voice Applications Peak Median

Pricing Voice Applications FAIL Waste

Ports are for Ships No Per Port Prices Let Your Voice Applications Scale

Telephony in the Cloud Cloud Provider & Consumer Carr Tele ier Hard com ware Reliable Telecom without Fixed Costs Pass Flexibility on to Customers Powered By

Cluster Layout AMAZON “Other” Cloud Telephony + API EC2 Realtime, high-CPU SVN Code Deployment Reliable Voice Monitoring + S3 Recording Storage NAGIOS Alerting Decouples SOA BOXCONFIG Capacity SQS Components COORDINATOR Management Privileged and Conﬁdential Failover Scenario

Twilio + EC2 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database EC2 Privileged and Conﬁdential

Twilio + EC2 Realtime Transcoding <Play>http://myserver.com/foo.mp3</Play> 256kbps stereo MP3 ! 11khz 8bit mono ulaw Example <Record/> http://api.twilio.com/..../Recordings/RE12345 http://api.twilio.com/..../Recordings/RE12345.mp3 11khz 8bit mono wav ! MP3 EC2 Privileged and Conﬁdential

Twilio + EC2 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer EC2 Privileged and Conﬁdential

Twilio AMI Cent5 3rd Party Software for All Machines (Apache, MySql, HaProxy, etc.) Automated Build Process (out of SVN) Rev’d Infrequently (Every couple months or so) AMI EC2 Privileged and Conﬁdential

AWS Realms DEV STAGE PROD AWS Account X AWS Account Y AWS Account Z S3 SQS S3 SQS S3 SQS Privileged and Conﬁdential

Twilio + EC2 At Boot Time, Pulls Twilio Code from SVN (What Code to Pull?) SVN AMI EC2 Privileged and Conﬁdential

SVN SVN Externals DEV svnroot/some-codebase ! ./usr/local/some-codebase @HEAD svnroot/come-config-files ! ./etc/some-config-files @HEAD STAGE svnroot/some-codebase ! ./usr/local/some-codebase @1000 svnroot/come-config-files ! ./etc/some-config-files @1005 PROD svnroot/some-codebase ! ./usr/local/some-codebase @999 svnroot/come-config-files ! ./etc/some-config-files @1002 DEV STAGE PROD FILESYSTEM FILESYSTEM FILESYSTEM Privileged and Confidential

Twilio Boxconﬁg Launches and Destroys Instances Coordinates Load Balancers UI + Pubsub + REST BOXCONFIG SVN AMI EC2 Privileged and Conﬁdential

Pulling It All Together Machine Startup/Shutdown UI Boxconfig 1. Launch Instances PUBSUB REST API System 2. Configure Services per Role 3. Notify Interested Load Balancers HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Privileged and Confidential

Pulling It All Together Machine Startup/Shutdown UI Boxconfig 1. Launch Instances PUBSUB REST API System 2. Configure Services per Role 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Media Layer Privileged and Confidential

Pulling It All Together Machine Startup/Shutdown UI Boxconfig 1. Launch Instances PUBSUB REST API System 2. Configure Services per Role 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Media Layer Privileged and Confidential 2 SVN

Pulling It All Together Machine Startup/Shutdown UI Boxconfig 1. Launch Instances PUBSUB REST API System 2. Configure Services per Role 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Media Layer 3 Privileged and Confidential 2

Pulling It All Together Machine Startup/Shutdown Boxconfig 1. Launch Instances Nagios 4 System PUBSUB 2. Configure Services per Role 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Media Layer 3 Privileged and Confidential 2

Pulling It All Together Machine Startup/Shutdown Boxconfig 1. Launch Instances Nagios 4 System 5 PUBSUB 2. Configure Services per Role 6 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Load Balancer Database Database Database Media Layer Media Layer Media Layer 3 Privileged and Confidential 2

Pulling It All Together Machine Startup/Shutdown Boxconfig 1. Launch Instances Nagios 4 System 5 PUBSUB 2. Configure Services per Role 6 3. Notify Interested Load Balancers 1 HTTP VoIP Load Balancer Load Balancer Web Web API API VoIP VoIP Load Balancer Load Balancer Load Balancer 7 Load Balancer Load Balancer 7 Load Balancer Database Database Database Media Layer Media Layer Media Layer 3 Privileged and Confidential 2

EC2 Learnings Test “Roles” on Instance Sizes Find optimal cost / performance tradeoff Great for Load Testing Spin up a test cluster, fire traffic, spin down... Total cost: $5-10! Great for Failure Testing Hrm, what happens if I shoot this database... terminateInstances() Privileged and Confidential

Simplifying Telecom Simple • Powerful • Pay-As-You-Go Jeff Lawson Co-Founder & CEO twitter: @twilio jeff@twilio.com http://www.twilio.com

AWS Customer Presentation - Twilio

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