"functionality and usability" is correct and usable in written English.
It is used to refer to how well something is designed to meet its purpose. For example, "This new website has excellent functionality and usability, making it easy for customers to navigate and find what they need."
Important reasons are inadequate functionality and usability.
The system design emphasizes both functionality and usability.
Given Apple's relentless pursuit of sleek hardware design, functionality and usability, it is unsurprising that both software developers and manufacturers worldwide are positioning themselves to take advantage of this industry boost.
Sony is playing catch-up in a lot of ways now, not just in terms of sales but in terms of the basic functionality and usability of the system".
Problems of software design (functionality and usability design) are specific problems of the coupling of sign and signal processes.
"But the more I used the phone, the more apparent it became to me that there are big gaps between Lumia and its competitors in terms of the functionality and usability of its apps," Mr. Cunningham said.
In considering these thematic areas, AGRIS partners agreed to map a strategy in each respective thematic area where the resultant output will drive technical developments, new functionalities and usability features.
The results were used for the foremost purpose of the new application – Uyayi – that is, to provide necessary information about maternal and infant health for smartphone users among lower income class Filipinos while taking into consideration the functionality, reliability, and usability of the application in catering to the target user.
And, when it comes to safeguarding a company's own IP and assets and ensuring they are robust enough, Dr. John Bates, a fintech pioneer and CEO of British-based test automation and AI specialist Eggplant, majority owned by Carlyle's European technology fund, ventured: "Ensuring Apps are secure is now a key aspect of customer experience, along with functionality, performance and usability.
"At a hardware BOM and manufacturing cost of $173, the new iPhone is significantly less expensive to produce than the first-generation product, despite major improvements in the product's functionality and unique usability, due to the addition of 3G communications," said Dr. Jagdish Rebello, director and principal analyst for iSuppli.
This consumer-focused approach implies giving as much – if not more – attention to attractive design, engaging functionality and intuitive usability as to technology development.
