EBay Inc. sued three employees working at e-commerce rival Amazon.com, alleging that they conspired with dozens of other workers to fraudulently take high-value online merchants from eBay.

Internet searches for “Canceling Amazon Prime” were 18 times higher June 15 — the beginning of Amazon.com’s two-day sale — than the previous day, according to search engine monitoring firm Captify, suggesting shoppers did not want to make a long-term c…

Amazon.com is tapping high-profile actors, athletes and social-media sensations like never before to maintain buzz around its Prime Day summer sale, now in its fifth year and battling increasing competition from rivals.

Two months ago, Amazon halted orders from thousands of suppliers with no explanation. Panic ensued — until the orders quietly resumed weeks later, with Amazon suggesting the pause was part of a campaign to weed out counterfeit products.

Amazon’s pledge last month to pump $800 million into making next-day delivery the new standard upped the pressure on its brick-and-mortar rivals to spend more trying to catch up all over again.

Amazon.com will spend $800 million in the current quarter to increase delivery speed for Prime members to one day from two, the company announced April 25.