You can create a new theme if you are a SharePoint tenant administrator. Themes are applied to separate subsites, not to entire site collections. But you can apply a theme to an all individual subsites with a PowerShell.
Open PowerShell ISE as an administrator
Install PowerShell PnP Module by running the following command:
There are only two types of Term Groups:
Global Term Group. Managed via the central administration UI. Read-only access from all site collections and sites.
Site Collection Term Group. Managed on the site collection level. Read-only access can be granted to other site collections using "Site Collection Access" (in SharePoint Online Only).
Subsite Term ...
They exist in the central term store (MMS SA) and Site Collection (terms themselves are in the MMS SA, but the SA has a pointer to the specific Site Collection).
Subwebs do not have their own taxonomy stores.
tenant.GetSiteProperties(startIndex, true); will only return classic sites. To return modern sites, you can utilize the Office PnP GetSiteCollections method.
var tenant = new Tenant(ctx);
var sites = tenant.GetSiteCollections(0, 5000, true);
Mike's answer almost tells everything about it and i will add a bit more facts. The storage limit applies to the site collection as a whole. The files in recycle bin will also count. In other words, the storage limit applies to the total size of the content for the top-level site and for all sub-sites within the site collection. If versioning is enabled, ...
Basically a site collection has a content database in the SQL .
Site collection can store multiple sites and all the data within all these sites lie within the content database .
You have control over it .
Site storage is something that is related to content within a particular site .
Since you can make lots of site in a single site collection ,...
A Site Collection is a container of Sites. (The distinction is clearer for developers as the code objects are named SPSite (for a Site Collection) and SPWeb (for a Site).
A Site Collection has a top level Site. (Developers can create an empty Site Collection, but they are kind of useless.)
Site Collections have Administrators, Sites have Owners. There are ...
As far as I know, you cannot specify a limit for the site (web) storage. This option is available for site collections only and is in charge of the amount of space the site collection can supply for all its documents and items within all sites (webs) of the site collection.