<p>The American Association of Variable Star Observers was formed in 1911 as a group of US-based amateur observers obtaining data in support of professional astronomy projects. Now, it has evolved into an International Association with members and observers from both the professional and non-professional astronomical community, actively supporting ground and space-based variable star projects. As such, the AAVSO&#8217;s main claim to fame is that it successfully engages backyard Astronomers, educators, students and professional astronomers in astronomical research, building inclusive international communities around its portfolio. I will present the main aspects of the association and how it has evolved with time to become a premium resource for variable star researchers. I will also discuss the various means that the AAVSO is using to support cutting-edge research, and give updates on the tools and resources that are now available to researchers worldwide.</p>
The AAVSO and its Variable Star Databank on Pulsating Stars
