GCP provides what may be the most powerful cloud platform with ease never seen in the other. Build highly reliable and scalable applications to scales you may have never imagined before all on Google's proven infrastructure.
Java is extremely versatile for many uses. Use Spring Boot to build websites with the strength of Spring and simplicity not seen before in Java applications. Build ETL pipelines in GCP with Java functionality leveraged on Apache Beam.
NodeJS is the latest fast rising technology for providing business application logic. Fantastic solution for lightweight REST services. GCP Cloud Functions allows for highly scalable NodeJS business logic for use as PAAS.