The modern web log, (short-form "blog") evolved from the online journal or diary, where people could keep running accounts of their personal lives.
Many Web sites, often have "What's New" or "News" sections, often on the index page and sorted by date, that the site owner updates. These can be "blog" formats that a Web site owner may update themselves without the use of specialized software. Ask us about how a blog might be useful to you!