What anchor text should be used for building backlinks?

What anchor text should be used for building backlinks?
"PHP Development Company" or "PHP Web Development Company" or any of your suggestion.
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What anchor text should be used for building backlinks while we have "PHP Development Company" in meta title?
how can we decide on which keyword you build backlinks?  ::) :o
 It is up to you and your company's requirement.  !-! Decide the keyword which is more important and focus more on that.

how can we decide on which keyword you build backlinks?  ::) :o
 It is up to you and your company's requirement.  !-! Decide the keyword which is more important and focus more on that.
Thank you riya for your reply can you guide me how should I do SEO If i have decided my primary keyword is "PHP Development Company"
How should I optimize
meta title?
meta description?
H1?
And anchor text for link building?

Please reply..

I usually use long tail keywords that are enhanced by keywords from google search

Agreed with user: riyaa_rp  !-!

Avoid building any anchor text links or you'll be banned forever from ... Exact Match — the anchor text is the exact keyword phrase we are looking to ... Ahrefs is a data‐driven marketing toolset powered by a huge index of backlinks, ... text types listed above have been used to link to our SEO tips article.

Its should be diversified. On high authority you should use exact match anchor, while on web 2.0 and other off page activities you should use long tail and LSI keywords for anchor.

if you are confused then compare both the keyword search volume and go for higher search volume keyword.

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