Magento Commerce 2.2 to 2.3.3 FE migration

During February and March 2020 I was responsible for the FE migration of a multi store and heavily customized multi theme Magento Commerce store.

This involved

1. analyzing and documenting:

• all Magento FE changes and enhancements related to the versions between current and upgraded version (creating an overview in Confluence with most important FE changes based upon the Magento official release notes).
• JS customizations (including overrides and mixins). Decide whether the overrides where still required or could be optimized (e.g. optimized jquery/ui requires)
• all core theme template overrides and customizations. Decide whether custom templates needed to be updated with core upgrade changes.
• 3rd party module changes (JS, templates, XML layout).

2. Development: doing the actual changes
3. Testing and bug fixing
4. Deployment documentation
5. Go-live assistance

This was an extensive job given the many customizations and overrides within the various themes. Luckily my years of experience with Magento upgrades helped a lot here (being able to extract a good 'diff' of all files, being able to assess what must and what must not be updated, understanding implications of changes and documenting this all in Confluence so creating a good reference for future upgrades).

The result: a smooth upgrade and launch without any production issues. Mission accomplished!