[SalesForce] Deploy the updated Apex class from Sandbox to Production

I am very new to Salesforce.

I was wondering what is the easiest way to deploy the updated Apex class from Sandbox to Production? I just made some small changes in one of our Apex classes. Since I couldn't modify the class in Production, so I made a Partial Copy Sandbox and edited the Apex class there.

After some physical tests(I didn't write any test file.), it is working good. Now how can I push the updated Apex class to Production?

I searched a bit on google, it seems like I need to download Eclipse, install Force Package, write some test coverage and etc. Do I have any easier way to make it happen?

Thank you very much!

Best Answer

You don't need any software. Just write your unit test in the sandbox, create a Change Set, add the elements you wish to deploy, upload the Change Set, then log back in to production and make your deployment.

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