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# AWS hybrid connectivity building blocks
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 There are three building blocks of a hybrid network connectivity architecture: 
+  **Hybrid network connections:** The connection types between AWS connectivity services and on-premises customer gateway devices. 
+  **AWS hybrid connectivity services:** The AWS services that provide connectivity and routing between the customer infrastructure and AWS. 
+  **On-premises customer gateway device:** The device inside the customer’s existing network that is the on-premises endpoint for hybrid network connection. Different connection types have different technical requirements for these devices, which are discussed in the following sections.