In more recent months, PayPal has chosen to form closer ties with its earlier payment rivals, including through tighten integrations with Apple's iOS, Samsung Pay, Android Pay, and other major stakeholders like Visa and MasterCard.
Android 4.0, also known by its code name Ice Cream Sandwich, tightens integration with services like Gmail, Google Maps, Google Calendar and the new Google Music service.
There's a cost to this tightened integration, though.
In France, the European Central Bank's Christian Noyer defended the currency union, saying the euro could yet become the world's leading currency if leaders of the 17-nation bloc succeed in tightening fiscal integration.
It's also going to tighten up the integrations with LinkedIn to do things like display the shared connections you have with your contacts, for example.
The increasing number of immigrants to Italy, both regular and irregular, has led Italy to tighten its migration and integration policies as well as to institute a number of amnesty programs in recent decades [32].
The British now hope that tightening euro-zone integration provides a chance for Mr Cameron to negotiate looser ties.
Furthermore, the integration of a program or compiler managed scratchpad memory can help to tighten bounds for hard-to-analyze memory access patterns.
Yet faced with the threat of terrorism and a deteriorating economic situation, the federal government abandoned plans to liberalise immigration rules and instead concentrated on tightening security and improving integration.
Additionally, we find that ambitious performance standards can also impact the organisation of an entire sector: they can force integration, the tightening of couplings between firms, in order to achieve systemic innovation.
