AWS SAM Tutorial (with a Lambda Example!)

In this video, I show you how to use the SAM CLI to create a Lambda Function. SAM is a tool used to deploy your infrastructure right in the comfort of your command line. Learn how to set up SAM and how to use it to deploy to AWS in this hands on tutorial video.
Looking to get hands on experience building on AWS with a REAL project? Check out my course - The AWS Learning Accelerator! courses.beabetterdev.com/cour...
Code - github.com/beabetterdevv/sam-app
How to install the AWS CLI - • How to install and con...
How to install Docker - • How to Install Docker ...
What is CloudFormation? - • What is AWS Cloudforma...
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[@quasicode6954]

Three years later this tutorial still works!

[@MJ-em_jay]

This is great. I've always wanted to learn SAM.

[@BeABetterDev]

Its a great tool! Hope this video helps speed up the process :)

[@hkmehandiratta]

Thanks a lot for uploading. Awesome contents at correct pace.

[@BeABetterDev]

Most welcome!

[@hellosouvik]

great step-by-step guide for beginners, thanks for sharing :)

[@BeABetterDev]

Glad it was helpful!

[@sreenivas9082]

Provided an easy way to understand - SAM, really helpful..

[@BeABetterDev]

Thanks for the kind comment Sreenivas!

[@jriverox]

Nice demo, I've been using serverless framework, but I'll try SAM.

[@BeABetterDev]

Thanks Jhony. Let me know your thoughts if you give it a try!

[@moali6657]

Brilliant video.
Thank you 💖

[@BeABetterDev]

You're very welcome!

[@TheCodeholic]

This is my 3rd or 4th video in last 1 hour and you explain everything perfectly.
You made me to subscribe. Your fault. 😀

[@BeABetterDev]

Thank you so much for your kind words! Really glad youre enjoying the content!

[@supraender]

Excellent content, thank you so much!

[@BeABetterDev]

You're very welcome Chris!

[@ToreyLittlefield]

Awesome thank you 🙏 keep on building🏗️

[@brenoa.santos4493]

Great! Thanks for this video.

[@BeABetterDev]

Glad it was helpful Breno!

[@danielpelaez8593]

Awesome, thanks man!

[@BeABetterDev]

You're very welcome Daniel!

[@amiryunas]

awesome tutorial bro. very clear

[@BeABetterDev]

Thanks so much amir!

[@t1279k]

This is great Tutorial. As part of local testing did you try to debug it does not seem to work it only stuck. sam local start-api -d 5890

[@kbarbier4946]

Really good tutorial

[@BeABetterDev]

Thanks!

[@himbary]

Great stuff, thanks

[@BeABetterDev]

My pleasure!

[@scottames3587]

Excellent!

[@BeABetterDev]

Thank you! Cheers!

[@CsdRazZaStaR2]

Good stuff. So docker simulates lambda and SAM uses the template to do that. Can something similar be done with dynamodb for local development? Or would you have to manually create the local db to follow your SAM template and configure environmental vars to use the right endpoint (local vs AWS)?

[@BeABetterDev]

Hi there CsdRazzaStar!
Great question. I believe this is possible as you've specified. I think you would just need to ensure you have dynamodb local running as a separate process to keep it up and running.

[@nexus888]

any video on SAM vs cloudfront vs beanstalk for when to use what?

[@abdulhaseeb4980]

What if we want to trigger lambda with a file upload in s3 inside some specific folder with a specific suffix?

[@kukuruyukyukyuk]

this is cool!!! well done

[@BeABetterDev]

Thanks super duper!

[@ruchk3872]

helpful...thank you!

[@BeABetterDev]

You're super welcome Ruch!

[@10SURA]

Can I generate the SAM template using existing CDK code or through AWS console ?

[@ytvickchen]

Great tutorial and perfect English :D

[@BeABetterDev]

Thanks Vick!

[@blamoism]

Thanks for great video. Found a small gotcha, there is a small difference between the source code and the code in video. To get json from the api had to use the extension /Prod/helloWorld?personId=5 instead of /Prod/hello?personId=5

[@BeABetterDev]

Thanks for clarifying this dean! Glad you enjoyed :)

[@andyrootdotcom]

How do you set a breakpoint in the lambda function?

[@kowshikjayakumar8405]

Hi, how can we construct the CF template ? Anyone please guide me

[@notwatermango]

Hey great video. Do we really need to define HelloworldFunction and HelloworldFunctionIamRole in outputs? why?

[@temitopetola]

Thanks. I love how simplified this is. One question, for the !sub $(ServerlessRestAPI) is that autogenerated on the apigateway endpoint?

[@BeABetterDev]

Hi Tola,
No problem. The sub function instructs sam to substitute the value of the ServerlessRestAPI resource in our YAML code at runtime. Since this value is not known until the resource is actually created, this kind of substitution is necessary.
Hope this helps,
Daniel

[@temitopetola]

@@BeABetterDev thanks so much this helps a lot. You are the best.

[@temitopetola]

@@BeABetterDev just one last one does it need to be serverlessrestapi? Can I rename it with anything. Thanks

[@rvasconcelossilva]

Hi mate, great video. just one question, how do I set up my credentials when I got my serverless application connecting and consuming other AWS services? I am receiving an error message. My service is getting a parameter value from AWS Parameter Store.

[@venkatbhaskar3027]

Hi bro, This idiot knew nothing. It is a waste to ask him questions. lolz

[@Chuls1000]

A great video. Can SAM do mostly everything CloudFormation can or is it limited to serverless domain?

[@haeso5]

SAM is a superset of CFN. A working template should work in SAM too

[@BioAbner]

Where can I get a template.yml file for a typescript node.js lambda?

[@harishdewangan2661]

This is very useful info.
One question:
Can we configure CloudFormation to update lambda function to have layers (for dependencies) I don't want to have multiple lambda functions with their own dependencies if that can be shared.
Also can this deployment be automated via Jenkins so that my team can use it ?

[@argl1995]

Yes we can add layers for lambda functions in AWS CloudFormation. I have done it in the past

[@robertlozano6780]

lambda layers was what i saw yesterday for that. I think they mention it in the serverless developer portal (in the videos)

[@JanHonzaPozivil]

I can't find the link to install SAM locally… Is SAM the same as CloudFormation? Or am I missing something?

[@fenilparmar2447]

Saved my life.💥

[@u123123123123123]

only for building serverless applications?

[@mankiplayer]

Thanks. This is really helpful!

[@BeABetterDev]

Thanks for watching and glad you enjoyed!

[@mohammadkermani2987]

Thanks! That was a very detailed yet short tutorial.

[@BeABetterDev]

You're very welcome!

[@venkatbhaskar3027]

lol

[@venkatbhaskar3027]

@@BeABetterDev This idiot replied to a 2 months back comment, but not 6 months old comment

[@shamstabrez2986]

bro ur video was awesome u must create a coplete tutorial on sam from scratch include serverless aplication repo

[@BeABetterDev]

Thanks for the suggestion!

[@alirezaop3484]

Great Video

[@BeABetterDev]

Thanks!

[@tech3425]

Nice video

[@Oddballvlogs]

not sure about prod, but a great tool for development purpose.

[@swapnas2311]

I am getting this error :
Error: Failed to create managed resources: Waiter StackCreateComplete failed: Waiter encountered a terminal failure state: For expression "Stacks[].StackStatus" we matched expected path: "ROLLBACK_COMPLETE" at least once
Please help.

[@cerstvemlieko]

this is awsam!!!

[@BeABetterDev]

Thank you very much!

[@harshavardhanms6121]

sir i got this error while executing sam deploy --guided
Error: Unable to upload artifact HelloWorldFunction referenced by CodeUri parameter of HelloWorldFunction resource.
S3 Bucket does not exist.

[@BeABetterDev]

Hi Harshavardhan,
Can you go to the console, delete your cloudformation stack, and try again? Let me know if this helps.

[@harshavardhanms6121]

@@BeABetterDev sorry I got with the same error

[@krishnarudra615]

Error: Stack aws-sam-cli-managed-default is missing Tags and/or Outputs information and therefore not in a healthy state (Current state:REVIEW_IN_PROGRESS). Failing as the stack was likely not created by the AWS SAM CLI
I am getting the above issue. Anybody know how to solve it

[@BeABetterDev]

Hi Krishna, have you tried deleting the stack and restarting from scratch?

[@paquete5541]

You are my god

[@hidehiroohyama9507]

FAILED. Reason: Unresolved resource dependencies [ServerlessRestApi] in the Outputs block of the template. anyone who got the same error?

[@BeABetterDev]

Hi hidehiro,
This error is usually thrown when you changed the name of the resource in the template.yaml file. If you changed the name of something, make sure you changed all occurrences of it on the template file.
Hope this helps

[@higgs_boson2231]

NOTE (VERY IMPORTANT): Your machine needs to have strictly Python 9 installed, none earlier or later. This will save the headache.

[@e-bikesquared]

Python 9? And here am I stuck on Python 3.10/

[@realcirno1750]

do u actually use this?

[@duftcola]

What about Cors ? and Permissions ? and Auth ? Nothing in this tutorial would work in the real work ...

[@thumpanekolla2661]

This does not work.

[@vinit.khandelwal]

Infrastructure as code sucks