Object Oriented Programming
Learnt Java
Deployed a Backend System
Automated deployment
Used MongoDB
Learned MongoDB
+4
After building fancy Full Stack Applications with React and Spring Boot and deploying them to the cloud, it's time to handle the data. Therefor I added a MongoDB to my Application. 
Even if my application will never be that big, that I have to worry about scalability, I decided to go with NoSQL. 

While a relational database would have been also a viable option. As is want to work in the future with large datasets and big data analysis, I choose MongoDB.