to improve the quality or usefulness of something, or to raise something or someone to a higher position or rank:

to improve something so that it works better or is more effective:

IT to get new computers or other equipment that is better than you had before:

HR to give a person a more important job or to state that their job is more important than it was before:

FINANCE to state that something such as a company is likely to produce more profit or growth, to be better able to pay back debt, etc. than was previously thought:

TRANSPORT to get better travel arrangements than you originally paid for:

an improvement in something:

IT a piece of software or equipment that improves how well a computer or machine works:

better travel arrangements than you originally paid for: