ECS: a cloud server, the specific content https://help.aliyun.com/document_detail/108473.html?spm=a2c4g.11174283.6.724.4c9e52feRrpG39
RDB: database, can choose the version https://help.aliyun.com/product/26090.html?spm=5176.7920929.1290475.2.290042f8FCX9Gn&aly_as=SiUCj7Zz
SLB: load balancing https://help.aliyun.com/product/27537.html?spm=5176.7921785.762131.doc3.5cd9410034CckO&aly_as=qaIHfPxN
OSS: Object Storage https://help.aliyun.com/product/31815.html?spm=5176.7933691.1309819.8.5cbb2a66XuYvGH&aly_as=U60sbuha
NAS: File storage https://help.aliyun.com/product/27516.html?spm=5176.cnnas.0.0.7d756689q1sbHP&aly_as=0eUKaX7z
CDN: CDN https://help.aliyun.com/document_detail/141958.html?spm=a2c4g.11174283.6.542.74657035JnZu2T
DNS: cloud resolution https://help.aliyun.com/document_detail/102231.html?spm=5176.71615.741494.btn2.6d4b5a71uBEHLf
Proprietary network VPC: https://help.aliyun.com/document_detail/34217.html?spm=5176.7937172.632920.btn2.540b5a86uHoQKD&aly_as=mM2o7-D6