Positive SSL Wildcard Certificate
Having an SSL Certificate on your domain helps improve the security of your website by encrypting all of the incoming and outgoing information, and is essential if you’re going to be processing payments directly on your website. With a positive SSL wildcard certificate you can secure unlimited sub-domains created under a main domain. Back in August 2014, Google announced that they would now be using HTTPS as a ranking signal, and pages which have HTTPS enabled will benefit from a minor boost in rankings. To get the full benefit, you should enable site-wide HTTPS.
*SSL certificate free with paid hosting plan.