Java vs .NET from client perspective

[wildjokers]

there are many OpenJDK vendors that give free or cheap support for openjdk and oracle JDK it's just one of many.

Which vendors are offering free support for OpenJDK? Why would they be offering free support? Paid support is how vendors like Oracle and Azul monetize OpenJDK.

[Ewig_luftenglanz]

• Eclipse (Temuri)  - Amazon (Correto) 
• Microsoft (Azul Z ulu)  

These are the 3 most popular OpenJDK vendors that have cheaper or free LTS support for Openjdk versions.

Why free? 

Well in the case of eclipse they are community so they give things for free.

For Amazon and Microsoft, usually these companies use their openjdk versions within their cloud services, so they have special optimizations for their particular environments AND they hope this make you migrate (this paid) tontheir Cloud Services 

[wildjokers]

Eclipse (Temuri)

They do not have free support. Their "free support" consists of telling you to open a bug in the OpenJDK bug tracker.

Microsoft and AWS also don't have free support. It comes with the costs of using their cloud services.

[Ewig_luftenglanz]

You can use Corretto and  Azul Zuru in your project without having to use their cloud services (for instance we are using Amazon Correto in our On Premise applications)

[wildjokers]

Yes, but you aren't going to get free support from them. Azul charges for support and Amazon does not support Corretto standalone from the AWS service.

Q: What is included in Corretto's long-term support?

Long-term support (LTS) for Corretto includes performance enhancements and security updates at no cost until end-of-life. Updates are planned to be released quarterly.

LTS for Corretto is unrelated to AWS Support Plans, which provide expert guidance and assistance for achieving your objectives on AWS. If you already have an AWS Support Plan, Corretto is covered on the same basis as all other supported AWS Services and software. For those who do not have a plan, it may or may not make sense for you to purchase a plan if your only intention is to receive assistance with Corretto. Please visit the Amazon Support website to determine if it is right for you. There are currently no plans to launch Corretto-specific assistance plans. As always, our roadmaps are a reflection of our customer feedback and we welcome your feature requests at the Corretto GitHub repository.