Mobile optimisation is still a big deal. With everyone glued to their phones, search engines want to make sure websites work seamlessly on mobile devices. If your site is mobile-friendly, responsive, and provides a smooth experience, it's more likely to climb the search rankings. Google, in particular, puts a lot of emphasis on mobile-first indexing, meaning it looks at the mobile version of your site for ranking. Neglecting mobile optimisation can lead to lower search rankings. So, making sure your site shines on mobile is a crucial part of today's SEO game.