Onetime
- Yandex Metrika
- Social links (vk.com, facebook.com, youtube.com, twitter.com, etc.)
- Registered in Yandex Webmaster https://webmaster.yandex.ru/sites/add/
- Registered in Google https://www.google.com/webmasters/tools/submit-url?hl=ru&pli=1
- robots.txt
- Sitemap.xml
- Contacts page contains Yandex Map or Google map
- Each page contains Title, meta “tags”, meta “description”
Periodic
- Review reports in Yandex Metrika
- Review analitics at https://www.cy-pr.com/