Which is better for SEO: subfolder or subdomain?

Typically just moving from one server to the next has no issues at all so long as you're not making any other changes to the site, such as changing URLs in a re-design process. Just make sure its a quality, respected server. If the server has issues then, yeah, you'll inherit them. But otherwise you'll be fine.

Yes. https://docs.woothemes.com/document/configuring-woocommerce-settings/

Hi, Your site is a Q&A so I presume that every time someone create a new Question it will generate a unique URL for that. Indepentend if you have or not an answer you want Google to crawl and index your site as quick as possible to start to analyzing the new page and bring traffic to it. The best way to expedite this "re-crawling" is to use a ping service that you can trigger after your user answer the question. PS: If you site is updated frequently you shouldn't have a problem with crawling, because Google usually identify this type of website really quick. Drop me a call is free for this week. Best,

Take the # of hours it takes you to do it and charge $50/hour. That's the price. Eventually you can charge $100/hour but that will require a bigger customer. If the customer is small < $1M in gross sales per year - charge $50/hour If the customer id medium < $1-5M / sales - charge $75 Over $5M - charge $100 The challenge you'll face is clearly defining the expectations and handoff so that you're not stuck doing stuff that you can charge for and always getting interrupted from past customers.

Well first off I wouldn't recommend trying to power your client's database with the standard WordPress database instance. They can use WordPress for the website all they like. But with millions of records like that, you really don't want to move those data in with WordPress. For that matter, you're probably gonna want a dedicated database server to answer those questions, if the client doesn't already have one. You might also need to investigate something like Elastic Search, depending on what your search requirements are and what sort of database they are using (pay close attention to whether or not it provides full text search ability). Beyond that, and somewhat obviously, you're also gonna want SSL on the website and to make sure you're up to date on federal and state privacy requirements for data like this, as well as best practices for securely transferring data over the web (port configuration, ssh keys, etc). The privacy concerns would raise a flag for me. If those data have anything personally identifiable in them - which they very probably do - then you're really gonna want to make sure you do your research on security of personally identifiable information. Government specific privacy /security /auditability requirements may also apply, so double check that too.