Z:gnu-www-ja-why-affero-gpl--cdbf8c-If a program is meant specific/en

If a program is meant specifically and only for SaaSS, you shouldn't write it. But many programs are useful for a variety of kinds of services, including some that are SaaSS and some that are not. It's useful to write and release these programs so people can set up non-SaaSS services with them, and good to release them under the AGPL.