[4] According to WWE's second-quarter earnings report, WrestleMania XXVII generated 1,059,000 PPV buys,[5] up roughly 30% domestically and 15% internationally from the previous year.

WrestleMania is considered World Wrestling Entertainment's (WWE) flagship pay-per-view (PPV) event, having first been held in 1985.

WrestleMania Axxess was held at the Georgia World Congress Center, while the WWE Hall of Fame ceremony took place at the Philips Arena.

[22] Celebrities and former wrestlers that appeared in WrestleMania XXVII segments include Snoop Dogg, Pee Wee Herman, Gene Okerlund, Mae Young, and Roddy Piper.

On August 13, 2011, a one-hour special including the opening segment, the Triple H vs. Undertaker match, and the post-WrestleMania confrontation between The Rock and John Cena was broadcast on NBC under the title WrestleMania XXVII: The World Television Premiere.

[25] The predominant rivalry for the Raw brand involved Dwayne "The Rock" Johnson, John Cena and the reigning WWE Champion, The Miz.

[30] Since 1993, the winner of the annual Royal Rumble match at the January event of the same name has won the opportunity to fight for a world championship at WrestleMania.

In December 2010, Raw color commentator Jerry Lawler began a feud with fellow announcer Michael Cole when the anonymous Raw General Manager gave Lawler a WWE Championship match in a Tables, Ladders, and Chairs match against defending champion The Miz.

[40] At the Royal Rumble pay-per-view, Punk cost Orton his WWE Championship match against defending champion The Miz.

[29] Orton won all of his matches, so Michael McGillicutty, David Otunga, and Mason Ryan were all banned from ringside at the event.

The following week, on the Raw before WrestleMania, both men brawled with each other, which ended after Punk performed a Go To Sleep on Orton after taking advantage of his injured knee.

On the March 14 episode of Raw, Nicole "Snooki" Polizzi appeared as a guest star and exchanged insults with Vickie Guerrero backstage.

In an eight-man tag team match, The Corre (Wade Barrett, Ezekiel Jackson, Justin Gabriel and Heath Slater) were originally scheduled to wrestle Big Show, Kane, Santino Marella and Vladimir Kozlov at WrestleMania.

Soon after, The Rock, the guest host, walked to the ring and cut a promo, mocking John Cena as well as firing up the crowd for WrestleMania.

[1] In the first match Edge (with Christian) defended the World Heavyweight Championship against the 2011 Royal Rumble winner Alberto Del Rio (with Ricardo Rodriguez and Brodus Clay).

Early in the match, Del Rio focused on Edge's injured arm and Christian fended off Clay and Rodriguez.

[1] In the next match, Michael Cole (with Jack Swagger) faced Jerry Lawler, with Stone Cold Steve Austin as the special guest referee.

Swagger tried to help Cole by throwing in the towel when Lawler began to take control but was denied and received a Stone Cold Stunner.

After Lawler had seemingly won, the anonymous Raw GM reversed the decision in an email read by Mathews because Stone Cold was a biased referee, making Cole the winner by disqualification.

Triple H entered to "For Whom The Bell Tolls" by Metallica wearing a mask and suit, then removed it for his normal entrance theme.

Undertaker entered to "Ain't No Grave" by Johnny Cash wearing a hat and suit, although this is replaced with his original entrance music on the WWE Network.

The match lasted a few minutes, with the ending coming when Morrison delivered Starship Pain on the outside of the ring to Ziggler and Snooki performed a cartwheel splash on McCool to get the win for her team.

"[48] The match was criticised by fans for being too long, involving a non-wrestler in Cole and for the Anonymous Raw General Manager's reversing of Lawler's initial victory.

[50] Later on Cena won the WWE Championship in a Triple Threat Steel Cage match against The Miz and John Morrison at Extreme Rules.

[58] The Miz suffered a legitimate concussion in the main event, being knocked out when Cena tackled him to the concrete for the double-countout, and largely doesn't remember the match.

[59] The concussion remains the worst of Miz's career, the only other time he was legitimately knocked out being by Kofi Kingston at Madison Square Garden in 2012.

On the April 11 Raw, Edge retired due to a legitimate neck injury, marking his last match for the company against Del Rio at WrestleMania.

[64] Layla and McCool would face off in a match at the Extreme Rules pay-per-view with no count-outs, no disqualifications, and the loser has to leave WWE.

[51] As a consequence of using a chair shot to the head, Triple H and The Undertaker were legitimately fined by the WWE for violating the company's "concussion policy" at the event.

[65] After a ten-month hiatus, The Undertaker returned on January 30, 2012 episode of Raw to confront Triple H before challenging him to a rematch at WrestleMania XXVIII, having felt unsatisfied with having to leave victorious not under his own power.