Amid fallout from Citi’s (expensive) payment mistake in which it accidentally transferred $900M to Revlon lenders and lost a legal battle to recoup it, banks are inserting wording into debt documents to protect themselves.

In a crowded market of digital-only banks and bank-type platforms, cash back rewards are seen as a way to keep customers engaged.

A series of payments systems operated by the Fed went down for several hours on Wednesday due to an “operational error,” affecting multiple services, including the automated clearinghouse system (FedACH), a lifeline that connects financial institutions sending electronic credit and debt transfers.

Streamlabs, a Logitech-owned company that specializes in tools to help streamers increase engagement, is including a tipping option in its mobile website builder Willow.

Stripe, a firm whose tools allow merchants to accept payments, has named Mark Carney to its board of directors. Carney, a former governor of the Bank of England and the Bank of Canada, is currently the United Nations envoy on climate action and finance.

Amazon Go stores are known for their “walk in, walk out” checkout-free experiences, and the tech giant is also acting as a vendor for its cashier-free technology toolset.

E-commerce and omnichannel business platform Shopify is integrating its payment button Shop Pay with Facebook and Instagram, allowing all Shopify merchants to offer it on their Facebook and Instagram stores.

Klarna, a firm that’s best known for its point-of-sale financing toolset, reports that it more than doubled its total number of U.S. users to 15 million compared to just one year ago.

FedNow, a real-time payments network run by the Federal Reserve, announced 110 new partner institutions for its pilot program, which includes banks and processors.

In the aftermath of the Capitol violence last week, payments company Stripe is no longer processing payments for the Trump campaign website, the Wall Street Journal reported.

Meemo, a payments app that tracks user transactions and offers merchant rewards, launched a website where users can create personalized gift cards.

TransferWise, the U.K.-based cross-border payments fintech that’s reportedly valued at $5B, is preparing to go public in the new year, according to Sky News.

Google Pay launched merchant cash back rewards through a partnership with U.K.-based startup, Fidel.

Zelle, the bank-backed peer-to-peer (P2P) payments network, is going social through the introduction of e-greeting cards. The feature was launched by U.S. Bank this week, and promises to add a ceremonial touch to peer-to-peer transactions.