&gt; you get the full power of the JVM&#x2F;Spring technology stack. And Groovy<p>If Groovy and Grails are technology &quot;to dream about&quot;, one wonders then why VMware (the Spring backers) retrenched their 6 developers working on Grails and (what is now Apache) Groovy early last year, and why Sun Microsystems (the JVM backers before Oracle) wanted nothing to do with Groovy in its day (despite supporting the JRuby and Jython developers).