Before the start of development comes the gathering of requirements. This daunting task with the seemingly endless discussions. Followed by the creation of epics, user stories or tickets which will change over and over again - even when development has already begun. We can do better than this: With Event Storming, an unlimited modeling space and all the key stakeholder in the same room. Let's get started with efficient Domain-Driven Design!

Good performance is a key success factor for public-facing software on the internet. Over the years, we have gotten pretty good at scaling content delivery, usually through a combination of heavy caching, cloud computing, and reverse proxies. But the world is changing rapidly, creating an increasing demand for personalization. Being able to deliver a highly personalized customer experience is very different from publishing static content. This talk goes in depth on how personalization challenges established best practices to build high performance web applications, and provides you with proven solution blueprints.

If you want to be sure that your software works correctly then you need to continuously test it. Automated tests save you from pressing F5 in the browser all the time as well as from using debug statements such as var_dump() in your code. They are also cheaper than manual tests and easier to implement than you may think. How do I test my code with as little effort as possible? How do I execute as few lines of code as possible to test what I am really interested in? And what does this have to do with clean code? Attendees of this session will learn why they should include PHPUnit into their set of development tools.

We all know how to test domain logic in isolation from framework, database, and template rendering. While testing framework and database interaction can be considered to be solved problems, there is room for improvements when it comes to the testing of views and their templates. Attendees of this presentation will learn how to decouple domain logic from views and make the latter convenient and fun to work with.

In March 2018, the haveibeenpwned.com password database contained about 501 Million hashes of known, stolen passwords. Yet, despite the fact companies obviously fail to securely store passwords and despite the majority of users still reusing a limited set of passwords for their online accounts, passwords are the predominant means of authentication. The brand new W3C Candidate Recommendation "Web Authentication" - or short WebAuthn - is supported by all major browser vendors and strives to make passwords a thing of the past. Get ready for the future and learn what WebAuthn is about, how you can use and implement it for your site today.

You probably have a love/hate relationship with the GDPR, just like me. It may do a great job protecting our privacy, but honestly, even that remains to be seen. For most companies, getting ready for May 25th was ... challenging. Now, as software architects and developers we must take responsibility and rethink many aspects of how we used to design and build systems. What does privacy by design really mean? How can we implement the right to erasure, especially in an event-driven world, and most importantly, how can we prove to data protection authorities that we did things right? This presentation will provide you with a good mix of proven tactics, educated guesses, and some speculation. Do not expect complete solutions for everything (yet), but there may well be some eye-opening moments.

No matter how experienced you are as a developer: you can always improve. This workshop teaches advanced coding techniques through live coding. First up, we will solve some interesting coding problems that the audience has defined (it's only live if nobody knows the problem beforehand!). In the second segment, we will write code in a test-driven fashion. In the afternoon, it is your turn to write code. You will work on an interesting non-trivial coding exercise while being individually coached by the trainer. It's your choice whether you want to try test-driven development, write code first, then tests, or write no tests at all. The latter, however, might earn you some angry looks from the trainer ;-) We will touch on domain-driven design, test-driven development, clean code and SOLID principles, and might even throw in a few design patterns. Every question will be answered! Make sure to bring a laptop with your favourite development environment (current version of PHP, an IDE, and PHPUnit). Attendees should have a good working knowledge of PHP, at least basic OOP skills, and be familiar with the basics of PHPUnit. No frameworks or other third-party code will be needed.