SSL is, to an extent, an obsolete term. There is another acronym doing the rounds in the technological circles. It’s TLS or Transport Layer Security. Before I talk about TLS, let me tell you what SSL is. SSL stands for Secure Sockets Layer, a protocol that ensures that the transactions between a browser and your web server are secure.
Now, TLS is also the same technology. In fact, it is just a new name for SSL. If you don’t know what either of these terms mean, let me explain. When requests pass through the web browser to the web server and information from the server to the browser, there are chances that the information can be intercepted and land in unauthorized, even malicious hands. SSL or TLS is a way these transactions are made secure.
The SSL or TLS protocol ensures that the web server is extremely secure. They help make websites trustworthy. However, just ensuring security is not enough; you have to establish that you have a secure website. How do you do that? You acquire a certificate that verifies your identity on the web and certifies that you are trustworthy. The term SSL Certificate refers to this certificate. Now, who issues this certificate? An institution called Certificate Authority (CA).
What the certificate contains is your identity information on the web, including your domain, your company details, and your business address. Every certificate has an expiration date and businesses need to make sure they renew theirs in time. The absence or expiration of the certificate is not a good thing for your website, especially if your business thrives on it.