Digital signage providers need to differentiate themselves by offering fullturnkey systems, rather than just stand-alone products.
数字标牌供应商需要通过提供完整的系统，来区别于其他供应商，而不只是提供单独的产品。
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PaaS offers full or partial application development that users can access, while SaaS provides a complete turnkey application, such as Enterprise Resource Management through the Internet.