A) Additional infrastructure (for example Heroku servers) may be required to host the application when using a headless approach. This can increase the complexity, cost, and maintenance of the solution. A Solution Architect should consider the trade-offs between flexibility and simplicity when choosing a headless approach. B. Features that are available by default in the Storefront Reference Architecture (SFRA) app will need to be custom built in custom frameworks when using a headless approach. This can increase the development time, effort, and risk of the solution. A Solution Architect should consider the benefits and drawbacks of using SFRA versus custom frameworks when choosing a headless approach. D. Available Service, Marketing, and LINK accelerators may not work without modifications when using a headless approach. This can limit the integration capabilities and functionality of the solution. A Solution Architect should consider the compatibility and extensibility of the accelerators when choosing a headless approach. Reference:
https://help.salesforce.com/s/articleView?id=sf.b2c_commerce_headless.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.b2c_commerce_sfra.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.b2c_commerce_link.htm&type=5