SharePoint PowerShell - Extract a list of all Site collections to a .csv file - SamTech 365

Currently conducting a SharePoint Security audit project, I thought others might benefit from a series of PowerShell scripts that allow you to extract useful insights and details regarding your SharePoint online.

The first script is a simple PowerShell script that enables you to export a list of all your SharePoint site collections to a .csv file.

The extract contains the following details:

Site URL
Storage Usage
Admins
Is Connected to Teams: A boolean value which distinguishes Teams Sites VS SharePoint Sites
Teams Channel Type (if applicable)
Site Title
Site Template
M365 Group ID
Number of subsites.

#Connect to Admin Center
Connect-SPOService -Url "https://yourtenant-admin.sharepoint.com"
 
#Get All site collections
$SiteCollections = Get-SPOSite -Limit All
$SiteReport = @()
 
#Iterate through each site
ForEach ($site in $siteCollections) {
    # Generate a report of site collection properties
    $siteReport += [PSCustomObject]@{
        URL = $Site.Url
        StorageUsage = $Site.StorageUsageCurrent
        Admins= $Site.Owner
        IsConnectedToTeams = $Site.IsTeamsConnected
        TeamsChannelType=$Site.TeamsChannelType
        Title=$Site.Title
        Template=$Site.Template
        GroupId=$Site.GroupId
        SubSitesCount=($Site.WebsCount-1)
    }
}
$SiteReport | Export-Csv -Path "C:\SPAudit\SiteCollections.csv" -NoTypeInformation