SEO is considered a long-term process because success is almost impossible to be achieved in just one night or overnight.
It takes a lot of considerations and hard work to measure a good success in the SEO industry. It’s also not that easy to see and observe changes immediately, that’s why it takes time. A lot of time to really see and feel the impact of all the hard work and efforts that are placed to rank on top of the Google search result, which is a good indicator of SEO success.