I have a site in a site collection. There are 20 sub-sites under that site. Every sub-sites need a timer job to do some alerts. I am trying to do a single timer job for all sub-sites. The project is created with the scope: "WebApplication". It is fine to working in one sub-site now. What "Scope" I should set to the feature that will service all sub-sites? List in each sub-site has the same name.
Please advise. Many thanks