Lots of planning is involved in the inception stage of solution architecture. Solution architecture starts with a strategic view and provides more technical implementation input as you move forward with the solution implementation.
Solution architecture ensures an end-to-end solution delivery and impacts the overall project life cycle. It defines a process standard for different phases of the project life cycle and makes sure that it is applied across the organization so that other dependencies can be addressed as the implementation moves forward.
Solution architecture considers a holistic view of the project. It keeps syncing other dependent groups, such as security, compliance, infrastructure, project management, and support, in order to keep them engaged in different phases of the project life cycle as required.