WebSphere Liberty is built upon an open source foundation. Why start with open source?

Open source plays an important role in our industry.  Open source has become the expected starting point for new development projects, making it easier to prove a new business initiative before committing to an investment in software support for the new venture. Open Liberty and the IBM Open J9 project reflect the IBM belief in the value of open standards and open community innovation and testing.

Can customers migrate apps from Open Liberty to WAS Base, ND or Liberty with full fidelity - like they can do now, by taking apps on Liberty and go directly to Base and ND?

Yes. Applications created using Open Liberty can easily be migrated to any version of WebSphere Liberty because the WebSphere Liberty portfolio is built on top of Open Liberty – the codebase of the commercial portfolio includes 100% of the Open Liberty code. They share the same code, but WebSphere Liberty has additional features that are not open source.

Applications created using Open Liberty can be migrated to WebSphere traditional Base and ND, but there are a few differences to consider, just as when moving from WebSphere Liberty to WebSphere traditional: 

Open Liberty provides an implementation of Java EE 8, which is also available in WebSphere Liberty and WebSphere traditional, that makes the migration of apps that use these features easy.  Open Liberty also provides an implementation of the Eclipse MicroProfile capabilities for building Java microservices.  The Eclipse MicroProfile capabilities are available in WebSphere Liberty, but are not available on WebSphere traditional, so apps that use these features are not as easily migrated from Open Liberty to WebSphere traditional.

What are some of the features of IBM WebSphere Application Server Liberty Core?

The software is fast and easy to download and takes only one minute to install and deploy. It integrates fully with open platforms and supports Java EE Web profile for web, mobile and OSGI apps. It’s designed to be an ideal runtime for microservices.

What are my options for licensing WebSphere Application Server for container deployments?

To help optimize the various deployment environments used with WebSphere, perpetual PVU and monthly VPCs are great options for licensing a server environment. For containerized environments running mixed workloads, the new WebSphere hourly option for containers may be the best fit.

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Open Liberty

WebSphere Application Server is built upon an open source foundation. Try Open Liberty at no cost and engage with our open source community.

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Try the WebSphere Application Server Liberty server that includes the complete set of Java EE 8 Full Platform technologies as well as features such as monitoring and LDAP Registry.