I had a team that coded integrations into Netsuite and used an integration platform for Shopify and others
You always need to learn Shopify and learn Netsuite. More so if you are coding it. We often had to pull developers back from other projects because one counter party or another changed something and nobody could work out how to change it.
We always ended up with scripting in Netsuite even with the integration platforms. There was no winning either way, but we went with integration platforms by choice because of maintainability and expertise from the platform engineers.
You always need to learn Shopify and learn Netsuite. More so if you are coding it. We often had to pull developers back from other projects because one counter party or another changed something and nobody could work out how to change it.
We always ended up with scripting in Netsuite even with the integration platforms. There was no winning either way, but we went with integration platforms by choice because of maintainability and expertise from the platform engineers.