With Site Optimization your site will be checked for performance, responsiveness, security and SEO. Recommendations or optimization can then be undertaken. The amount of time will vary depending on what needs to be done. The end result of a full process will be a site that loads quickly, is completely responsive on all devices, is secure and has SEO in place.
It is important that a site works well in all those metrics.
Please get in touch and I will be glad to discuss the subject and check out your site. Prices will vary but can be firmed up once I have inspected the site.