diff --git a/docs/CONTACT.md b/docs/CONTACT.md
index dd7f7a0..7b7aa03 100644
--- a/docs/CONTACT.md
+++ b/docs/CONTACT.md
@@ -9,16 +9,16 @@
 | 社区论坛   | https://www.isharkfly.com/            |
 
 ## 微信公众号
-![](https://cdn.ossez.com/img/cwikius/cwikius-qr-wechat-search-w400.png )
+![](https://cdn.isharkfly.com/img/cwikius/cwikius-qr-wechat-search-w400.png )
 
 ## 头条号
-![](https://cdn.ossez.com/img/cwikius/cwikus-qr-toutiao.png)
+![](https://cdn.isharkfly.com/img/cwikius/cwikus-qr-toutiao.png)
 
 ## 百家号
-![](https://cdn.ossez.com/img/sharkfly/baidu/baidu-qr.jpg)
+![](https://cdn.isharkfly.com/img/sharkfly/baidu/baidu-qr.jpg)
 
 ## 知乎
-https://www.zhihu.com/people/huyuchengus
+https://www.isharkfly.com/people/huyuchengus
 
 ## 快速导航
 <!--@include: links.md -->
diff --git a/docs/work/certifications/microsoft/microsoft-azure-az-900.md b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
index 0bd80ef..d9af947 100644
--- a/docs/work/certifications/microsoft/microsoft-azure-az-900.md
+++ b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
@@ -52,6 +52,12 @@ AZ-900 的考试比较简单，但也绝对不是简单到什么都不看，随
 * [Azure Microsoft Defender for Cloud](https://www.isharkfly.com/t/untitled-ai-bot-pm/17825)
 * [Azure Site-to-Site VPN](https://www.isharkfly.com/t/untitled-ai-bot-pm/17827)
 * [Azure Point-to-Site VPN](https://www.isharkfly.com/t/untitled-ai-bot-pm/17830)
+* [Azure Data Lake](https://www.isharkfly.com/t/untitled-ai-bot-pm/17849)
+* [Azure Data Lake Analytics](https://www.isharkfly.com/t/untitled-ai-bot-pm/17850)
+* [Azure Databricks](https://www.isharkfly.com/t/untitled-ai-bot-pm/17850)
+* [Azure Synapse Analytics](https://www.isharkfly.com/t/untitled-ai-bot-pm/17852)
+* [Azure SLA](https://www.isharkfly.com/t/azure-sla/17853)
+* [Azure Network Security Group](https://www.isharkfly.com/t/untitled-ai-bot-pm/17854)
 
 ## 题库