AWS ECS（Elastic Container Service）服务连接和服务发现是两种不同的方法，其中服务连接用于实时管理容器服务之间的通信连接，而服务发现则是一种自动化寻找容器服务的方式。

对于服务连接可使用如下代码示例：

1.创建一个VPC（Virtual Private Cloud）网络

2.创建容器服务并将其放置在该VPC网络中：

{
   "AWSTemplateFormatVersion" : "2010-09-09",
   "Description" : "Create a new VPC and launch an ECS cluster within it.",
   "Resources" : {
      "CompliantVPC" : {
         "Type" : "AWS::EC2::VPC",
         "Properties" : {
            "CidrBlock" : "10.0.0.0/16",
            "Tags": [
               {"Key": "Name", "Value": "Compliant VPC"}
            ]
         }
      },
      "CompliantSubnet" : {
         "Type" : "AWS::EC2::Subnet",
         "Properties" : {
            "CidrBlock" : "10.0.1.0/24",
            "VpcId" : { "Ref" : "CompliantVPC" },
            "Tags": [
               {"Key": "Name", "Value": "Compliant Subnet"}
            ]
         }
      },
      "CompliantSecurityGroup" : {
         "Type" : "AWS::EC2::SecurityGroup",
         "Properties" : {
            "GroupName" : "CompliantSecurityGroup",
            "GroupDescription" : "Allow traffic to and from the EC2 instances and ELB in the Compliant VPC.",
            "VpcId" : { "Ref" : "CompliantVPC" },
            "SecurityGroupIngress" : [
               {
                  "IpProtocol" : "tcp",
                  "FromPort" : "0",
                  "ToPort" : "65535",
                  "SourceSecurityGroupId" : { "Fn::GetAtt" : [ "CompliantSecurityGroup", "GroupId" ] }
               }
            ]
         }
      },
      "CompliantServiceRole" : {
         "Type" : "AWS::IAM::Role",
         "Properties" : {
            "AssumeRolePolicyDocument": {
               "Version" : "2012-10-17",
               "Statement" : [ {
                     "Effect" : "Allow",
                     "Principal" : {"Service" : "ecs.amazonaws.com"},
                     "Action" : "sts:AssumeRole"
                  }
               ]
            },
            "Path" : "/",