Site indexing and traffic increased so dramatically overnight

[gmk1567]

Number of indexed pages jumped from 39000 to 52000 and traffic increased around 50% in my site.Note: used "site" command to check the indexed pages. I understand this is approximate.In addition, number of crawled pages/day also increased dramatically.No change in the robots.txt, sitemap, crawl errors and duplicate issues. But server migrated to different IT infrastructure.

Before any celebration, want to identify the helper.

Thanks.

[JamesNorquay]

Could be a number of things,

Site could be faster on the new server.

Additional elements from the XML site map could have been picked up by Google?

But yes site/ IT infrastructure needs to be top notch to yield the best results from IM.

[AlanMosley]

Matt cutss has stated that load speed has to be pretty bad before it is an issue and then it is only a small signal. Less than 15 of sites send that signal. So I doubt that was the problem, it could be that that ip has some bad rep, hosting some shoddy websites on same ip.
But my number one guess is that somthing was fixed in the transfere to the new servers. I know you have stated thats not the case, but it may be something you are not aware of.

[gmk1567]

Thanks for your time.

Checked performance and it didn't improve.

Previous infrastructure was managed by normal ISP. Now migrated to enterprise service provider. ( sorry for avoiding the names here)

You mentioned as something was fixed. Any insight on the other possible areas will be helpful.

Thanks.

[AlanMosley]

No nothing specific, but just from experience, you move somthing delete something, replace somthinng, and all of a sudden some orther problem disapears. you may never know what it was.

[gmk1567]

Site performance didn't improve according to GWT.

Is there any Google preferred IT infrastructure list? - May be expecting too much.

FYI, previous infrastructure was managed by normal ISP.

Didn't submit any new sitemap. But crawled pages per day increased around 3 times.

[AlanMosley]

just a thougth, ip number change may of triggered a re crawl, and pages could be doubled up .

I remebr ewhen i changed ip numbers rankings disapeared a for a few days.