Using Conditional Tags in Page Templates

conditional-page.php

<?php

    if ( is_front_page() ) :
        get_header( 'home' );
    elseif ( is_page( 'About' ) ) :
        get_header( 'about' );
    else:
        get_header();
    endif;


//another Exam
<?php if( is_home() || is_front_page() ) : ?>
 
<!-- Homepage Only Code -->
 
<?php else : ?>
 
<!-- Other Page Code -->
 
<?php endif; ?>

https://developer.wordpress.org/themes/basics/conditional-tags/