Exhibit 99.1

AKAMAI REPORTS SECOND QUARTER 2013

FINANCIAL RESULTS

CAMBRIDGE, Mass. – July 24, 2013 – Akamai Technologies, Inc. (NASDAQ: AKAM), the leading cloud platform for helping enterprises provide secure, high-performing user experiences on any device, anywhere, today reported financial results for the second quarter ended June 30, 2013. Revenue for the second quarter of 2013 was $378 million, a 14 percent increase over second quarter 2012 revenue of $331 million, or up 18 percent adjusted for the Advertising Decision Solutions (ADS) divestiture.

Net income in accordance with United States Generally Accepted Accounting Principles, or GAAP, for the second quarter of 2013 was $62 million, or $0.34 per diluted share, a 13 percent decrease from the prior quarter’s GAAP net income of $71 million, or $0.39 per diluted share, and a 40 percent increase over second quarter 2012 GAAP net income of $44 million, or $0.24 per diluted share.

The Company generated non-GAAP net income* of $84 million, or $0.46 per diluted share, in the second quarter of 2013, a 10 percent decrease from the prior quarter’s non-GAAP net income of $93 million, or $0.51 per diluted share, and a 25 percent increase over second quarter 2012 non-GAAP net income of $67 million, or $0.37 per diluted share.

Both GAAP and non-GAAP net income results for the second quarter of 2013 include a $9 million, or $0.05 per diluted share, benefit from the change in our depreciation methodology effective on January 1, 2013.

“Akamai delivered a strong second quarter, achieving the high end of our guidance range for both the top and bottom line,” said Tom Leighton, CEO of Akamai. “We were especially pleased with the strong growth in our performance and security solutions, and we continue to invest in both sales capacity and innovation in an effort to drive further growth in this important area.”

Adjusted EBITDA* for the second quarter of 2013 was $166 million, in line with the prior quarter, and up from $143 million in the second quarter of 2012. Adjusted EBITDA margin* for the second quarter of 2013 was 44 percent, down a point from the prior quarter and up a point from the same period last year.

Cash from operations for the second quarter of 2013 was $130 million, or 34 percent of revenue. At the end of the second quarter of 2013, the Company had over $1.1 billion of cash, cash equivalents and marketable securities.

Sales through resellers and sales outside the United States accounted for 20 percent and 29 percent, respectively, of revenue for the second quarter of 2013.

Share Repurchase Program

During the second quarter of 2013, under a share repurchase program that was extended by the Board of Directors in February 2013, the Company spent approximately $42.5 million repurchasing 1.1 million shares of its common stock, at an average price of just over $39 per share. The Company has $77 million remaining on its current authorization, which runs through January 31, 2014.

The Company had approximately 178 million shares of common stock outstanding as of June 30, 2013.

(*See Use of Non-GAAP Financial Measures below for definitions.)

Quarterly Conference Call

Akamai will host a conference call today at 4:30 p.m. ET that can be accessed through 1-866-788-0542 (or 1-857-350-1680 for international calls) and using passcode No. 59331581. A live Webcast of the call may be accessed at www.akamai.com in the Investor section. In addition, a replay of the call will be available for one week following the conference through the Akamai Website or by calling 1-888-286-8010 (or 1-617-801-6888 for international calls) and using passcode No. 71794732.

About Akamai

Akamai^® is the leading cloud platform for helping enterprises provide secure, high-performing user experiences on any device, anywhere. At the core of the Company’s solutions is the Akamai Intelligent Platform™ providing extensive reach, coupled with unmatched reliability, security, visibility and expertise. Akamai removes the complexities of connecting the increasingly mobile world, supporting 24/7 consumer demand, and enabling enterprises to securely leverage the cloud. To learn more about how Akamai is accelerating the pace of innovation in a hyperconnected world, please visit www.akamai.com or blogs.akamai.com, and follow @Akamai on Twitter.

Condensed Consolidated Balance Sheets

(dollar amounts in thousands)

(unaudited)

Condensed Consolidated Statements of Operations

(amounts in thousands, except per share data)

(unaudited)

Condensed Consolidated Statements of Cash Flows

(amounts in thousands)

(unaudited)

Reconciliation of GAAP net income to non-GAAP net income

and Adjusted EBITDA

(amounts in thousands, except per share data)

Supplemental Financial Data

(amounts in thousands, except end of period statistics)

*Use of Non-GAAP Financial Measures

In addition to providing financial measurements based on generally accepted accounting principles in the United States of America (GAAP), Akamai provides additional financial metrics that are not prepared in accordance with GAAP (non-GAAP). Management uses non-GAAP financial measures, in addition to GAAP financial measures, to understand and compare operating results across accounting periods, for financial and operational decision making, for planning and forecasting purposes and to evaluate Akamai’s financial performance. These non-GAAP financial measures are non-GAAP net income, non-GAAP net income per share, Adjusted EBITDA, Adjusted EBITDA margin, and capital expenditures, as discussed below.

Management believes that these non-GAAP financial measures reflect Akamai’s ongoing business in a manner that allows for meaningful comparisons and analysis of trends in its business, as they exclude expenses and gains that may be infrequent, unusual in nature and not reflective of the Company’s ongoing operating results. Management also believes that these non-GAAP financial measures provide useful information to investors in understanding and evaluating the Company’s operating results and future prospects in the same manner as management and in comparing financial results across accounting periods and to those of peer companies.

The non-GAAP financial measures do not replace the presentation of the Company’s GAAP financial results and should only be used as a supplement to, not as a substitute for, the

Company’s financial results presented in accordance with GAAP. Akamai has provided a reconciliation of each non-GAAP financial measure used in its financial reporting to the most directly comparable GAAP financial measure. This reconciliation captioned “Reconciliation of GAAP to Non-GAAP Financial Measures” can be found on the Investor Relations section of Akamai’s website.

The non-GAAP adjustments, and Akamai’s basis for excluding them from non-GAAP financial measures, are outlined below:

Akamai’s definitions of its non-GAAP financial measures are outlined below:

Non-GAAP net income – GAAP net income adjusted for the following tax-effected items: amortization of acquired intangible assets; stock-based compensation; amortization of capitalized stock-based compensation; restructuring charges and benefits; acquisition related costs and benefits; certain gains and losses on investments; gains, losses and other activity related to divestiture of a business; loss on early extinguishment of debt; gains and losses on legal settlements and other non-recurring or unusual items that may arise from time to time.

Non-GAAP net income per share – Non-GAAP net income divided by the basic weighted average or diluted common shares outstanding used in GAAP net income per share calculations.

Adjusted EBITDA – GAAP net income excluding the following items: interest; income taxes; depreciation and amortization of tangible and intangible assets; stock-based compensation; amortization of capitalized stock-based compensation; restructuring charges and benefits; acquisition related costs and benefits; certain gains and losses on investments; gains, losses and other activity related to divestitures of a business; foreign exchange gains and losses; loss on early extinguishment of debt; gains and losses on legal settlements and other non-recurring or unusual items that may arise from time to time.

Adjusted EBITDA margin – Adjusted EBITDA as a percentage of revenues.

Capital expenditures (Capex) – Purchases of property and equipment, capitalization of internal-use software development costs and capitalization of stock-based compensation.

Akamai Statement Under the Private Securities Litigation Reform Act

This release contains information about future expectations, plans and prospects of Akamai’s management that constitute forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995, including statements about future business opportunities. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors including, but not limited to, effects of increased competition including potential failure to maintain the prices we charge for our services and loss of significant customers; failure of the markets we address or plan to address to develop as we expect or at all; inability to increase our revenue at the same rate as in the past and keep our expenses from increasing at a greater rate than our revenues; a failure of Akamai’s services or network infrastructure; delay in developing or failure to develop new service offerings or functionalities, and if developed, lack of market acceptance of such service offerings and functionalities or failure of such solutions to operate as expected, and other factors that are discussed in the Company’s Annual Report on Form 10-K, quarterly reports on Form 10-Q, and other documents periodically filed with the SEC.

In addition, the statements in this press release represent Akamai’s expectations and beliefs as of the date of this press release. Akamai anticipates that subsequent events and developments may cause these expectations and beliefs to change. However, while Akamai may elect to update these forward-looking statements at some point in the future, it specifically disclaims any obligation to do so. These forward-looking statements should not be relied upon as representing Akamai’s expectations or beliefs as of any date subsequent to the date of this press release.