So answering your question, if you are fine with above, yes you can keep your static templates. Of course according to best practices it will be good to plan to fully migrate to editable templates in the end, but it is not a show stopper to move into AEM as a Cloud Service. In terms of configuration use case, I think that instead of editable templates you could consider to use Context-Aware Configuration:
So answering your question, if you are fine with above, yes you can keep your static templates. Of course according to best practices it will be good to plan to fully migrate to editable templates in the end, but it is not a show stopper to move into AEM as a Cloud Service. In terms of configuration use case, I think that instead of editable templates you could consider to use Context-Aware Configuration: