An estimate is a best guess of how much a job might cost. A quote is more exact. Once you've accepted a quote, the contractor has to do the work for that price.

Software Terms
Developing the right seed keywords is crucial for setting up a successful SEO strategy and enhancing online visibility.
IT specialists and businessmen use the word “outstaffing” meaning that it is a type of remote employment where a company is responsible for all, or nearly all, of an outstaffed employee’s time. So, the definition suggests that an outstaff team member would be dedicated to one client rather than working from project to project.
What is software sustaining engineer?Sustaining Engineering is a critical team that handles the most difficult customer escalations, resolving software bugs, code defects and other issues, from the kernel all the way up to the highest levels of the open source stack.