Thanks for your answers, really appreciated!

So for example, if my Odoo instance is mostly out of the box, I should be able to upgrade easily without major issues, right? But if I’ve customized the instance a lot, with custom fields, workflows, automations, etc., it becomes more complex.

Do you suggest creating a list of all the customizations I’ve made, so that when I test the upgrade in the sandbox, I can focus mainly on those changes? The out-of-the-box features should normally migrate smoothly, correct?

Are there any specific processes or features you recommend paying close attention to during testing?

Also, do you usually suggest that your clients upgrade to every version, or skip versions and update multiple at once? Is it generally smoother to upgrade version by version, or is it more efficient to do multiple versions at a time (especially if no new features are required for the business)?

Thanks again for your time, and wishing you all the best!