SD-WAN is most effective when it begins with business priorities rather than appliance features. Start by documenting critical applications, location types, transport options, availability targets and security requirements.
Map applications and sites
Identify which workflows are sensitive to delay, loss or outages. Then group locations by operational importance, bandwidth demand and available access types.
Define policy and resilience
Decide how traffic should move under normal conditions and what should happen when a circuit, provider or application path fails.
Plan deployment as a program
Standardize site readiness, provider coordination, change controls, testing and success criteria before the first rollout wave.