This is a very interesting question because of the fact that it does not really have an answer that is simple to understand. Everything depends on the knowledge that you have at the moment about search engine optimisation and the knowledge that you are going to have in the future about the industry. We say this because of the fact that search engine optimisation changes from month to month and year to year.
In the event that you have no problems in staying up-to-date with the changes that happen in the industry and you do not mind do a lot of on-site and off-site work, you can consider doing SEO work alone. If not, it is better to talk with professionals that can actually do the high quality work that would be necessary.
If you do consider working alone on the SEO campaigns of your business, you have to think about the following factors.
Available Time
This is definitely something that counts much more than you may think. High quality SEO work does require you to spend a lot of time learning new things, as already mentioned, and doing work. Even a simple task like looking for guest posting opportunities can take many hours. Add the fact that you have to talk with the people that you find and then create new content and you can easily figure out how much time is necessary.
In many situations you would have to hire extra staff in order to do search engine optimisation work. That is definitely something that you have to remember. The costs that are associated with these extra business additions can be pretty high. You will want to always choose expenses in order to make a smart business decision. If you see that hiring a professional SEO company is going to be better in terms of finances, it is something that you want to take into account.
Do You Understand Modern SEO?
There is this general belief that search engine optimisation is always the same. This is definitely incorrect. What works really well for a project may not be what would bring in the best possible results for another project. It is really important that you do all that you can in order to adapt properly and that you realize what modern SEO is all about.
Although there are many different things that can be said about this subject, the most important fact that you have to remember is that modern search engine optimisation is all about taking advantage of what happens and focusing on what works best, with a huge focus being put on content marketing.
Do be completely honest with yourself, your understanding of search engine optimisation and the time that you currently have available. This is definitely going to highlight whether or not you should do SEO work alone or you should hire an experienced SEO firm. Believe it or not, most companies should opt for the professional search engine optimisation specialist as results would simply be a whole lot better.
