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Serverless beyond AWS Lambda

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Serverless architecture isn't just Functions as a Service.
Given at the AWS New York Summit 2018.

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Serverless beyond AWS Lambda

  1. 1. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Ben Kehoe Cloud Robotics Research Scientist at iRobot AWS Serverless Hero @ben11kehoe Serverless beyond AWS Lambda
  2. 2. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Understanding serverless • Often equated with Lambda • This misses the bigger picture • And the smaller picture @ben11kehoe
  3. 3. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Understanding serverless • Serverless is about letting you focus on your business problems • Use (and abuse) managed services wherever you can • “Service-full” • Glue it together with managed, ephemeral compute • FaaS is one example, but there are others @ben11kehoe
  4. 4. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Serverless is masonry: FaaS is the mortar; buy your bricks @ben11kehoe
  5. 5. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Service-full • Break your business problem down: what parts aren’t core to what you’re doing for your customers? • Use (or abuse) a managed service for those • What to look for in a managed service: • Resources billed → resources used • Smaller, more abstract control plane @ben11kehoe
  6. 6. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Why is serverless a thing now? • Managed services have been around forever • But business logic has to go somewhere… • Managed rules engines exist • But you can only get so far without actually coding something… • Ephemeral compute has enabled providers to manage code @ben11kehoe
  7. 7. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Ephemeral compute • Compute with a defined, finite lifetime • Temporal: FaaS, streaming compute • Input: managed batch compute @ben11kehoe
  8. 8. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. What’s needed to build an application? 1. Data stores (DB, blob, …) 2. API 3. Auth+sec 4. Compute 5. Message bus 6. Orchestration 7. Analytics @ben11kehoe
  9. 9. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Data stores • Serverless means you don’t pay for idle • What does “idle” mean with respect to a data store? • Storage itself is usage • “Warmth” of data is usage @ben11kehoe
  10. 10. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Data stores • S3 • DynamoDB • Autoscaling (performance implications) • Aurora “serverless” • No HTTP interface → does not play well with Lambda @ben11kehoe
  11. 11. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. API • AppSync • CRUD backend? AppSync + DDB and you’re done • API Gateway @ben11kehoe
  12. 12. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Auth+sec • Client identity: Cognito • Federated identity or User Pools? • Got a 3rd party federated identity provider (e.g., Auth0)? Still works with Cognito federated identity! • Can even allow direct access to AWS services, for thinner backends • Policies and scoping becomes really really important • More service = more IAM @ben11kehoe
  13. 13. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Compute • Lambda • Event-driven • Request-response • Periodic • AWS Glue • AWS Batch • Not Fargate @ben11kehoe
  14. 14. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Message bus • SNS • SQS • Kinesis Data Streams • Kinesis Firehose • Kinesis Analytics • AWS IoT • Not Amazon MQ @ben11kehoe
  15. 15. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Analytics • S3 + Athena • AWS IoT Analytics • AWS Glue • RedShift, kinda? @ben11kehoe
  16. 16. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Summing up • Serverless is masonry • FaaS (and other ephemeral compute) is just mortar • Managed services are your load-bearing bricks @ben11kehoe
  17. 17. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Thank you!

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