Important SEO activities

[bossaircurtain]

Gather relevant keywords
Find competitor keywords
Group collected keywords
Remove duplicate keywords
Remove page duplicates
Manage broken links
Optimize images for search
Optimize meta descriptions

[sekar]

SEO is helping for optimizing the website and getting Rank on the 1st page. Promote website or Brand on worldwide.
SEO activities are:

Analysis the website
On-page Optimization : keywords research, URL Optimization, Updating fresh content, internal and external linking, site map generation etc
Off-Page Optimization : Build backlink from other website
Technical SEO : Implementing coding on backend

[saritamagazine]

Collect relevant keywords.
Find competitor keywords.
Group collection keywords.
Remove duplicate keywords.
Remove page duplication.
Manage broken links.
Optimized search images.
Optimize meta descriptions.

[manoharkahaniya]

Collect relevant keywords.
Find competitor keywords.
Group the collected keywords.
Remove duplicate keywords.
Remove duplicate pages.
Broken links management.
Optimize images for search.
Optimize meta descriptions.

[jenniferjennife]

Quality, authoritative content is the number one driver of your search engine rankings and there is no substitute for great content—this is especially true when doing SEO marketing. Quality content created specifically for your intended user increases site traffic, which improves your site's authority and relevance.

[gajretreat]

Import seo activities are

Clean Your Site of Duplicate Content
Track Keywords
Keep Unique and Relevant Title Tags Within Your Website
Optimize Images with Descriptive ALT Tags
Write Competitive Content Frequently to Stay on Top
Monitor Your Backlinks' Naturalness

[smartscraper]

Instead of following the common activities blindly, make sure you use them as per the strategy. it will help for sure.

[saritamagazine]

Clean up duplicate content on your site.
Track Keywords - Make a list of keywords to verify rankings.
Keep unique and relevant title tags in your website.
Optimize images with descriptive ALT tags.
Write competitive content frequently to stay on top.
Monitor the naturalness of your backlinks.

[nirvanaclub]

Important SEO activities are

Article submission
Blog submission
Classified submission
PPT sharing
PDF submission
Question answering
Bookmarking submission
Directory submission
Forum profile creation