Get-SPOSiteGroup cmdlet接受Site参数，因此可以像这样检索租户内每个 * 网站集 * 的网站组：

Connect-SPOService -Url $adminUrl 
$sitesInfo = Get-SPOSite 

#Retrieve and print all sites
foreach ($site in $sitesInfo) {
    Write-Host 'Site collection:' $site.Url     
    Get-SPOSiteGroup -Site $site.Url
    Write-Host '-----------------------------' 
}

要检索每个 * 网站 * 的其他组，可以使用以下脚本：

$adminUrl = "https://<tenant>-admin.sharepoint.com"
$UserName = "<username>@<tenant>.onmicrosoft.com" 
$Password = "--password goes here--"

$SecurePassword = $Password | ConvertTo-SecureString -AsPlainText -Force
$creds = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName, $SecurePassword)
$pscreds = New-Object -TypeName System.Management.Automation.PSCredential -argumentlist $userName, $SecurePassword

Connect-SPOService -Url $adminUrl -Credential $pscreds
$sitesInfo = Get-SPOSite 

foreach ($site in $sitesInfo) {
    Write-Host 'Site collection:' $site.Url     
    #1. Retrieve and print site info 
    #Get-SPOSiteGroup -Site $site.Url
    $AllWebs = Get-SPOWebs -Url $site.Url -Credential $creds

    #2.Retrieve and print webs info (groups Title property in this case)
    foreach ($web in $AllWebs) {
        $web.Context.Load($web.RoleAssignments.Groups)
        $web.Context.ExecuteQuery()
        $web.RoleAssignments.Groups.GetEnumerator() | % { Write-Host $_.Title }   
    }
    Write-Host '-----------------------------' 
}

要点：

1.要检索站点集中的站点，此处使用Get-SPOWebs.ps1
1.获取组 * 每个网站 * Web.RoleAssignments.Groups使用