Currently there are 4 very important things to take into account to rank high on google:
- Use google webmaster tool to select preferred domain
- HTTP vs HTTPS
- Mobile enabled site vs AMP
- Enable compression on your website
Preferred domain need to be applied to the 4 domain possibilities you have e.g. HTTP and HTTPS with or without WWW e.g. your preffered domain can be http: // www . domain . xx or https : // domain . xx. If preferred domain has been selected in Goggle webmaster tool, google tends to collate all links from the different domain possibilities into one single container. This is good for you SERP calculations to gather all link juice to your actual used version of your domain.
A HTTPS enabled site ranks much higher with the same amount and quality of backlinks in its SERP calculation and AMP (Accelerated Mobile Pages (by google)) tend to multiply SERP values by a factor of 3 to 4 when placing websites in search results and lastly compression on your webserver for CSS, JAVA and HTML increases the download time and will influence the value of your site thus rank higher in search.
Further you need to get people to reference your site by building some good content e.g. press release etc. so media knows you exist