What is grails?
According to grail documentation
Grails is a full stack framework and attempts to solve as many pieces of the web development puzzle through the core technology.

What are the built-in features of Grails?

Data management:
It is easy with built-in Object Relational Mapping (ORM) using Hibernate

Cool view technology:
Similar to JSP groovy has Groovy Server Pages (GSP)

MVC
Integrated Spring MVC

Commandline
An interactive command line environment and build system based on Gradle

Servlet container: Has embedded Tomcat container with hot loading feature.

Global language
Support for internationalization (i18n) built on Spring

Transaction
A transactional service layer built on Spring’s transaction abstraction
All of these are made easy to use through the power of the Groovy language and the extensive use of Domain Specific Languages (DSLs)

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