Groovy is an object-oriented programming language for the Java platform Originally, a dynamic language for the JVM. However, since Groovy 2.0, both static and dynamic typing are supported.It can be used as a scripting language for the Java Platform. Groovy has a lot fewer rules than Java.
Grails is a web application framework that is great to use for real projects. Grails is an open source web application framework that leverages the Groovy language and complements Java web development. Grails (previously known as "Groovy on Grails") is a programming framework based on Groovy and inspired by Ruby on Rails. Grails is used to build web applications that run on the JVM.
Enterprises today require agile platform for rapid development of applications with ready assurance to quality of services, compliance to architecture and design standards.
There are languages and frameworks such as Groovy and Grails, emerge in recent years that support a more agile development approach. Groovy, is a dynamic language that works on top of the Java Virtual Machine.Grails is an open-source web application framework on top of the Groovy which exercise convention – over – configuration, honor the DRY (Don’t Repeat Yourself) principle, and is overall lightweight- making it a sound agile framework.