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---
title: "SD-WAN"
type: concept
tags:
- networking
- wan
---
## Aliases
- SD-WAN
- Software-Defined Wide Area Network
- 软件定义广域网
## Description
软件定义广域网SD-WAN是一种通过软件控制层对物理网络进行抽象的技术实现动态路径选择和负载均衡。在企业云架构中SD-WAN 通常作为 Overlay Network叠加网络部署在 AWS 等公有云上,解决静态路由的局限性。
## Use Cases
- 多分支机构网络互联
- 动态路径选择和流量调度
- 替代传统 MPLS 专线
- Silver Peak 等 SD-WAN 方案集成
## Related Concepts
- [[Hub-and-Spoke]]
- [[Overlay Network]]
- [[Transit Gateway]]
## Related Entities
- [[AWS]]
## Sources
- [[ctp-topic-18-wide-area-networking-in-aws-cloud]]