\documentclass[tikz, border=10pt]{standalone}
\usetikzlibrary{shapes}




\begin{document}

\begin{tikzpicture}[every node/.append style={draw, rounded corners, inner sep=10pt}]
    \node [rectangle split, rectangle split horizontal, rectangle split parts=3]
        {Services
         \nodepart{two} Event Driven Framework
         \nodepart{three} OS Adapter Layer};

\end{tikzpicture}
\end{document}