Data Engineering Mastery: From Data Lake Architecture to Cost Optimization

Dear AWS users,
our May event will happen soon.
Thanks to OTTO for providing us the space, drinks, food and a talk for the AWS User Group Meetup in May 2025. 🚀

Join us for an exciting evening hearing talks about Cost Savings by Falk Woldmann, Michael Weidemann & Frederic Düwer and Transactional Datalakes by Hendrik Hagen.

After the presentation, we’ll unwind with some relaxed networking time – a perfect opportunity to connect with fellow community members and exchange ideas.
Don't miss out on this fun and impactful evening:

• 18:00 Warm-up
• 18:30 - 19:00 How to use a simple trick to save USD 500,000 in data transfer costs
• 19:00 - 19:15 Break
• 19:15 - 19:45 Building a Transactional Data Lake on AWS with Lake Formation and Apache Iceberg
• 19:45 - 20:30 Wrap up & Networking

How to use a simple trick to save USD 500,000 in data transfer costs by Falk Woldmann, Michael Weidemann & Frederic Düwer
This talk will cover:

• The challenges: Otto's Cost Optimization Service Team (COST) faced a significant challenge in managing data transfer expenses.
• The solution: They implemented a simple yet effective strategy: migrating their platform to dual-stack IPv6.
• The benefits: This migration significantly reduced their reliance on the AWS NAT gateway, leading to substantial cost savings.

Building a Transactional Data Lake on AWS with Lake Formation and Apache Iceberg by Hendrik Hagen
This session explores how to build a modern, transactional Data Lake on AWS using Lake Formation and Apache Iceberg. Learn how to bring ACID guarantees, schema evolution, and time travel to your S3 data, enabling reliable, high-performance analytics at scale.

IMPORTANT
To visit the OTTO Campus, you'll need to be on our guest list. Please enter your full name here: https://forms.gle/5nELHEaRuKTtFMEj8
This will ensure your access to the venue.

We will meet here:
Gebäude 4
Werner-Otto-Straße 1-7
22179 Hamburg
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As usual, we are always looking for new speakers and topics. In case you would like to share something within our AWS User Group, feel to reach out via email, meetup.com, or use our Google Form to submit your idea.
If you or your company wants to host our user group, please contact us via the event location Google Form.
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