White Hat seo - improve website traffic by search engine guidelines.
Black hat seo - Illegal way to boost your website in a search engine
Gray hat seo- Combination of white and black hat techniques , but now it not in use

On Page SEO
Off Page SEO...

Types of SEO:
On Page SEO
OFF Page SEO

White Hat SEO and Black Hat SEO are the 2 types of SEO

There are two types of seo:
1.White Hat SEO
2.Black Hat SEO and
3.Grey Hat SEO.

There are to types On page seo and off page seo.

ON page and OFF are two types of seo.
In which ON page deals with changes made on website and off page is generally referred for building backlinks to website.

1. Black Hat SEO
2. White Hat SEO
3. Grey Hat SEO

There are 3 types of Seo

1. White hat SEO
2. Black Hat SEO
3. Grey Hat SEO

1. White hat SEO
2. Black hat SEO
3. Grey Hat SEO

I used to work in White hat SEO.

SEO ! you can doing two type SEO in webbing.

1 - white hat SEO
2 - black hat SEO

Grey hat seo is one type of functionality of SEO type's.

White Hat SEO, Black Hate SEO and Gray Hat SEO.

two types of SEO
1-ON-PAGE SEO
2-OFF-PAGE SEO

Two types of SEO:-

1. Off page
2. On page