How to use subtitle in an article

Make use of the \subtitle command, to do this use scrartcl document class,

and if you want the same fonts as at the article class,

also set them accordingly with \setkomafont

\documentclass{scrartcl}

\setkomafont{disposition}{\normalfont\bfseries}

\begin{document}

\title{(Title)}
\subtitle{(Subtitle)}
\author{(Author)}
\maketitle
\end{document}