Jeroen Reijn
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jeroenreijn.com
Jeroen Reijn
@jeroenreijn.com
☁️ Cloud Solutions Architect @ Luminis.
🚀 AWS Community Builder #serverless
📝 Blogs at https://www.jeroenreijn.com
Reposted by Jeroen Reijn
🚀 🆕 The AWS Lambda roadmap is now open and on GitHub! See what we're working on, researching, and planning. Provide feedback, collaborate on ideas!

s12d.com/lambda-roadmap

#aws #serverless
GitHub - aws/aws-lambda-roadmap
Contribute to aws/aws-lambda-roadmap development by creating an account on GitHub.
s12d.com
November 25, 2025 at 8:38 PM
This is great! Amazing to see it gets released so close to the Java 25 release! aws.amazon.com/blogs/comput... #java #aws #lambda
AWS Lambda now supports Java 25 | Amazon Web Services
You can now develop AWS Lambda functions using Java 25 either as a managed runtime or using the container base image. This blog post highlights notable Java language features, Java Lambda runtime upda...
aws.amazon.com
November 15, 2025 at 8:19 AM
In July, AWS announced a powerful update to Amazon ECS with built-in support for blue/green deployments. Now two additional built in deployment strategies have been added: linear and canary deployment. This eliminates having to use CodeDeploy. aws.amazon.com/about-aws/wh...
Amazon ECS now supports built-in Linear and Canary deployments - AWS
Discover more about what's new at AWS with Amazon ECS now supports built-in Linear and Canary deployments
aws.amazon.com
October 30, 2025 at 10:48 PM
#hugops to all on call AWS engineers
October 20, 2025 at 5:23 PM
It seems some services in us-east-1 still have degraded operations. That’s a long disruption 😲. I hope they will share an extensive post mortem. Looking forward to learn from the lessons learned!
October 20, 2025 at 4:39 PM
While trying to figure out of there was anything wrong with our jira and bitbucket cloud signin it seems AWS is having issues in us-east-1 .
October 20, 2025 at 8:06 AM
You can now become an AWS Certified Generative AI Developer - Professional! 😅 Machine Learning specialty is being retired and the Security Specialty is getting an update! #aws #certification aws.amazon.com/blogs/traini...
Big news: AWS expands AI certification portfolio and updates security certification | Amazon Web Services
AWS announces major certification updates, introducing the AWS Certified Generative AI Developer - Professional certification and refreshing the AWS Certified Security – Specialty exam with enhanced...
aws.amazon.com
October 14, 2025 at 5:55 PM
Well it seems that I will most likely watch this years Werner Vogels re:Invent keynote the next day as it seems to start at 30 minutes past midnight Amsterdam local time. No keynote watch party this time 😅 reinvent.awsevents.com/keynotes/ #aws #reinvent
AWS re:Invent 2025 Keynotes | Amazon Web Services
Hear from AWS leaders about what’s top of mind for them, from innovations in infrastructure and AI/ML to the latest trends and breakthroughs in cloud computing.
reinvent.awsevents.com
October 13, 2025 at 10:01 AM
In my latest post, I show how to improve observability for Windows EC2 instances using the Amazon CloudWatch Agent, fully automated with AWS CDK (TypeScript).

www.jeroenreijn.com/2025/10/impr...

#aws #cdk #observability #cloudwatch
Improve observability for Windows EC2 instances with the CloudWatch Agent
Learn how to improve observability for Windows based EC2 instances with the CloudWatch agent via AWS CDK in TypeScript, including CloudWatch agent configuration and Windows performance counters.
www.jeroenreijn.com
October 6, 2025 at 5:18 PM
Today I’m at the AWS Community Day NL in Utrecht. Looking forward to connect with like minded people and learn from the speakers. Pretty cool entrance at a great venue (movie theater) #awscommunity #awscommunityday
September 24, 2025 at 7:41 AM
Bumped to iOS 26. So far so good. Not sure yet about this glass UI. It feels a bit slow at times on my iPhone 12 but overall the experience looks good.
September 19, 2025 at 5:50 PM
Sweet! My recent article on AWS budgets is now featured on the DZone homepage dzone.com/articles/aws...
Enable AWS Budget Notifications With SNS Using AWS CDK
In this article, learn about how to set up AWS Budget notifications with SNS using AWS CDK in TypeScript, including gotchas around IAM and KMS policies.
dzone.com
September 18, 2025 at 6:42 PM
The AI summary in #bitbucket for PRs is a pretty handy feature. It writes clean notes for the reader of a pull request. Not that I can’t write them myself, but it definitely saves time and is probably better than that I would write them.
September 9, 2025 at 12:36 PM
Java 25 will be the next LTS release. ETA is in two weeks (16th) as far as I know and I’m already looking forward to start using it in AWS Lambda, which seems to be planned for October according to docs.aws.amazon.com/lambda/lates... #aws #lambda #java
Lambda runtimes - AWS Lambda
Learn about the languages that Lambda supports through runtimes.
docs.aws.amazon.com
September 2, 2025 at 8:40 PM
Yesterday just before the CFP deadline I submitted some talks for @nljug.bsky.social #Jfall. Hoping one of my talks goes through 🤞, so I can continue my once in 3 year score streak (presented in 2019 and 2022 I noticed 🙃)
September 2, 2025 at 6:22 AM
Reposted by Jeroen Reijn
⭐ Issue #51 of the Serverless Advocate Newsletter is now out!

serverlessadvocate.substack.com/p/51-increme...

This week, our serverless expert is AWS Community Builder @tpschmidt.com, and our spotlight falls on AWS Community Builder Kate Gawron! 🏆

Please share! ♻️

#AWS #Serverless
August 31, 2025 at 8:00 AM
Was planning to take the AWS SysOps exam in September, but I will wait to see the changes in the new exam as it’s renamed to CloudOps with more focus on containers: aws.amazon.com/blogs/traini... #aws #certification
Coming soon: Exam update and new name for cloud operations certification | Amazon Web Services
Learn about updates we're making to the AWS Certified CloudOps Engineer – Associate exam (formerly known as AWS Certified SysOps Administrator – Associate) to align with the latest skills and…
aws.amazon.com
August 31, 2025 at 8:53 AM
Are you using the AWS X-Ray SDK or the X-Ray daemon for your application to send traceability data into AWS X-Ray? 🕵

🚨 AWS is ending support for the AWS X-Ray SDK and X-Ray daemon. docs.aws.amazon.com/xray/latest/... #aws
X-Ray SDK and daemon end of support timeline - AWS X-Ray
The following table lists the dates and the level of support for X-Ray SDKs and daemon.
docs.aws.amazon.com
August 27, 2025 at 2:02 PM
The network reachability analyzer in the AWS console is actually a pretty handy tool! Troubleshooting some connectivity issues with the on-prem environment and at least it validating all is good on the AWS side. 😅
August 27, 2025 at 12:59 PM
Reposted by Jeroen Reijn
✍️ New blog post by Jeroen Reijn

Enabling AWS Budget Notifications with SNS using AWS CDK

#aws #typescript #awscdk #finops
Enabling AWS Budget Notifications with SNS using AWS CDK
Keeping track of AWS spend is very important. Especially since it’s so easy to create resources. You...
dev.to
August 25, 2025 at 5:29 PM
AWS just launched the AWS Builder Center. A centralized place for AWS Builders. Looks great! Go check it the introduction post at aws.amazon.com/blogs/aws/in...
Introducing AWS Builder Center: A new home for the AWS builder community | Amazon Web Services
Visit builder.aws.com to begin exploring AWS Builder Center. Sign up for a Builder ID if you don't have one yet and claim your unique alias to access all features, including content creation, wishlist...
aws.amazon.com
July 9, 2025 at 8:27 PM
Finished the @awscloud.bsky.social Digital Sovereignty partner learning path tonight. I think it offers a lot of information and tips on how the solve sovereignty requirements. www.credly.com/badges/c3190... #aws #digitalsovereignty
AWS Partner: Digital Sovereignty on AWS (Technical) was issued by Amazon Web Services Training and Certification to Jeroen Reijn.
Earners of this badge have demonstrated technical knowledge of AWS Services and sovereign-by-design approaches to guide and support their customers in addressing their digital sovereignty requirements...
www.credly.com
July 2, 2025 at 5:52 PM
Working with Java and AWS? If so, do check out this great new Youtube channel called "Java in the Cloud" by @marksailes.bsky.social ! Oh and I'm a guest in one of the episodes!! 😎
youtu.be/6I8FTA8iiBw

#java #cloud #aws
June 30, 2025 at 12:28 PM
🤯 Got a mail from Microsoft that the cost of my personal office 365 family subscription, which I hardly use, will increase by 30%! From 99,99 to 129.99. No explanation whatsoever 😠
June 4, 2025 at 11:43 AM