This whitepaper is for historical reference only. Some content might be outdated and some links might not be available. # Connectivity design selection This section of the whitepaper covers the considerations which affect your connectivity design selection. Connectivity design includes the logical aspects as well as how to design and optimize your hybrid connectivity reliability. The following considerations will be covered: scalability, connectivity models, reliability, and customer-managed VPN and SD-WAN. **Topics** + [Scalability](scalability.md) + [Connectivity models](connectivity-models.md) + [Reliability](reliability.md) + [Customer-managed VPN and SD-WAN](customer-managed-vpn-and-sd-wan.md)