What are the aspects in SEO?

Here are the few aspects in SEO are :

1. Technical crawlability
2. Website content publishing
3. Keyword relevance
4. Link backs (referral links)
5. Social Media interactions
6. Content update frequency
7. Website user experience
8. Integration with Google services

The aspects in SEO are:

Technical crawlability
Link Building
Content and User Experience
Title Tag
On-Page Content
Keywords Research
Website content publishing
Social Media interactions
Content update frequency
Integration with Google services

Best seo aspects:-

Page Titles
Meta Description
Meta Tags
Url Structure
Heading Tags
Alt Tags
Internal Linking
Canonical Issue
Sitemap
Robots

On Page SEO factors are:

Keyword research
Content writing
Meta tags
Google Analytics
Google Webmaster tools
sitemap.xml
robots.txt
.htaccess
Heading Tags(H1, H2)
Alt Tags