What Technical Skills Should a Dynamics 365 CE Developer Develop to Move From Customization Work Into Solution Architecture?

Moving from Dynamics 365 CE customisation into solution architecture requires broader skills beyond configuring tables, forms and business rules. Which areas should a developer strengthen across Dataverse architecture, plugins, APIs, integrations, security, Azure, Power Platform, ALM and performance? How should developers develop the ability to evaluate architectural trade-offs rather than simply implement requirements? This discussion is useful for both freshers planning their long-term career path and experienced CE developers preparing for senior technical or architect responsibilities.