外链就是指向我们企业网站的外部链接，当搜索引擎蜘蛛在爬取时通过这条外部链接，爬取到我们网站的内容，我们网站的内容可能就会被抓取到并且建立索引，这条外部链接对我们网站来说就是一条有效的外链。

　　所以外链的作用还是挺大的，外链在网站优化中占具的地位也是很高的，以下就是外链作用的具体说明：

　　1. 外链可以提高我们网站的流量，增加用户访问网站的几率，扩大企业产品或服务的曝光度。

　　2. 外链可以提升网站权重和排名。

　　3. 外链在一定程度上可以引蜘蛛，增加网站收录，特别对于新网站来说有很好的作用。

　　注意：外链要的是质量而不是数量。如果前期外链过急，发布大量低质量的外链，搜索引擎就会觉得我们在群发垃圾信息，被判断为作弊，所以我们真正要注重的是外链的质量。

　　下面就网站外链建设给出了两点建议：

　　1. 找寻有权重外链平台。

　　在这样的网页平台发布外链，指向我们企业网站，才会有效果。

　　2. 找寻相关性强的外链平台。

　　首先我们所发布的外链平台要与我们优化的网站行业具有相关性；其次，我们发布的外链要与我们优化的网站主题或者关键字相关，这样才会带来优质流量访问我们的网站。

　　外链建设是需要持久稳定的，要使网站的外链匀速上涨，断断续续的发外链会影响到我们网站的整体优化。在企业网站优化中外链必须要合理的布局才能体现出外链的效果，发挥外链真正的作用。


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