Exhibit 99.1

Amdocs Limited Reports First Quarter Fiscal 2023 Results

Record Quarterly Revenue of $1.19 Billion, up 7.3% YoY as Reported and up 9.5% YoY in

Constant Currency⁽²⁾

Continued Sales Momentum & Strong Revenue Growth

Reiterates Fiscal 2023 GAAP Diluted EPS Growth Outlook of 3%-10% YoY

Raises Fiscal 2023 Non-GAAP Diluted EPS Growth Outlook to 9%-13% YoY

Reiterates Fiscal 2023 Free Cash Flow⁽¹⁾ Outlook of $700 Million

First Quarter Fiscal 2023 Highlights

(All comparisons are against the prior year)

JERSEY CITY, NJ – January 31, 2023 – Amdocs Limited (NASDAQ: DOX), a leading provider of software and services to communications and media companies, today reported operating results for the three months ended December 31, 2022.

“Fiscal year 2023 is off to a strong start as we continued to support our customers on their journey to modernize for the 5G and cloud era. First quarter revenue was a record $1.19 billion, up 9.5% from a year ago in constant currency⁽²⁾ and driven by continued strength in North America and healthy activity in Europe. Sales momentum was also robust and included a notable new project award to support the 5G fixed wireless access strategy of a leading North American Tier 1 operator. Additionally, Amdocs was selected by Globe Telecom in the Philippines to provide a next-generation 5G charging platform for consumer and business customers. Overall, we ended Q1 with record-high 12-month backlog of $4.09 billion, up roughly 7% from a year ago”, said Shuky Sheffer, president and chief executive officer of Amdocs Management Limited.

“First quarter operating profitability improved on a sequential and year ago basis as we delivered consistent project execution and ongoing efficiency gains while maintaining a focus on R&D investment. Our managed services business also grew in Q1, compared with a year ago. Among the highlights, Dish and Amdocs signed a new managed services agreement which will offer an improved billing experience for Dish commercial customers. Additionally, we extended our relationships with several existing managed services customers under expanded multi-year engagements, including Three UK for which Amdocs is supporting the migration to a modern cloud-based data architecture to enable data-driven decision making,” said Tamar Rapaport-Dagim, chief financial officer & chief operating officer of Amdocs Management Limited.

Sheffer concluded, “Situated at the heart of a strategic multi-year 5G, digital, network automation and cloud-driven investment cycle, Amdocs is a key technology enabler with market leading products and services and a strong reputation for delivering mission critical systems transformation. While we are closely monitoring the global macroeconomic uncertainty, as a trusted technology partner we continue to see healthy levels of engagement and an attractive pipeline of opportunity as we collaborate with our customers to evaluate their next-generation requirements. Combined with our strong first quarter, and the visibility provided by our unique and resilient business model, we are raising the midpoint of our guidance for non-GAAP diluted earnings per share growth in fiscal 2023, while continuing to expect strong earnings to cash conversion for the full year.”

Revenue

(All comparisons are against the prior year period)

Net Income and Earnings Per Share

For further details of the reconciliation of selected financial metrics from GAAP to Non-GAAP, please refer to the tables below.

Capital Allocation: Returning Cash to Shareholders

Twelve-month Backlog

Twelve-month backlog was a record $4.09 billion at the end of the first quarter of fiscal 2023, up approximately 6.8% as compared to last year’s first fiscal quarter. Twelve-month backlog includes anticipated revenue related to contracts, estimated revenue from managed services contracts, letters of intent, maintenance and estimated on-going support activities.

Second Quarter Fiscal 2023 Outlook

Full Year Fiscal 2023 Outlook

The forward looking statements regarding our second fiscal quarter 2023 and full year fiscal 2023 guidance take into consideration the Company’s current expectations regarding macro and industry specific risks and various uncertainties and certain assumptions that we will discuss on our earnings conference call. However, we note that market dynamics continue to shift rapidly and we cannot predict all possible outcomes, including those resulting from certain geopolitical events, the current inflationary environment, the COVID-19 pandemic and the prevailing level of macro-economic, business and operational uncertainty, which have created, and continues to create, a significant amount of uncertainty, or from current and potential customer consolidation or their other strategic corporate activities.

Conference Call and Earnings Webcast Presentation Details

Amdocs will host a conference call and earnings webcast presentation on January 31, 2023 at 5:00 p.m. Eastern Time to discuss the Company’s first quarter of fiscal 2023 results.

To participate in the call, please register here to receive the dial-in numbers and unique access PIN. The conference call and webcast will also be carried live on the Internet and may be accessed via the Amdocs website at https://investors.amdocs.com. Presentation slides will be available shortly before the webcast.

Non-GAAP Financial Measures

This release includes non-GAAP diluted earnings per share and other non-GAAP financial measures, including free cash flow and normalized free cash flow, revenue on a constant currency⁽²⁾ basis, non-GAAP cost of revenue, non-GAAP research and development, non-GAAP selling, general and administrative, non-GAAP operating income, non-GAAP operating margin, non-GAAP interest and other expenses, net, non-GAAP income taxes, non-GAAP effective tax rate, non-GAAP net income, non-GAAP net income attributable to Amdocs Limited and non-GAAP diluted earnings per share growth. These other non-GAAP measures exclude the following items:

Free cash flow equals cash generated by operating activities less net capital expenditures and other. Normalized free cash flow, a measure of our operating performance, is further adjusted to exclude net capital expenditures related to the new campus development, payments for non-recurring and unusual charges (such as capital gains tax in relation to the divestiture of OpenMarket), and payments of acquisition related liabilities. These non-GAAP financial measures are not in accordance with, or an alternative for, generally accepted accounting principles and may be different from non-GAAP financial measures used by other companies. In addition, these non-GAAP financial measures are not based on any comprehensive set of accounting rules or principles. Amdocs believes that non-

GAAP financial measures have limitations in that they do not reflect all of the amounts associated with Amdocs’ results of operations as determined in accordance with GAAP and that these measures should only be used to evaluate Amdocs’ results of operations in conjunction with the corresponding GAAP measures.

Amdocs believes that the presentation of non-GAAP diluted earnings per share and other financial measures, including free cash flow and normalized free cash flow, revenue on a constant currency⁽²⁾ basis, non-GAAP cost of revenue, non-GAAP research and development, non-GAAP selling, general and administrative, non-GAAP operating income, non-GAAP operating margin, non-GAAP interest and other expenses, net, non-GAAP income taxes, non-GAAP effective tax rate, non-GAAP net income, non-GAAP net income attributable to Amdocs Limited and non-GAAP diluted earnings per share growth when shown in conjunction with the corresponding GAAP measures, provides useful information to investors and management regarding financial and business trends relating to its financial condition and results of operations, as well as the net amount of cash generated by its business operations after taking into account capital spending required to maintain or expand the business.

For its internal budgeting process and in monitoring the results of the business, Amdocs’ management uses financial statements that do not include amortization of purchased intangible assets and other acquisition-related costs, changes in certain acquisition-related liabilities measured at fair value, restructuring and unusual charges or benefits, equity-based compensation expense, other and related tax effects. Amdocs’ management also uses the foregoing non-GAAP financial measures, in addition to the corresponding GAAP measures, in reviewing the financial results of Amdocs. In addition, Amdocs believes that significant groups of investors exclude these items in reviewing its results and those of its competitors, because the amounts of the items between companies can vary greatly depending on the assumptions used by an individual company in determining the amounts of the items.

Amdocs further believes that, where the adjustments used in calculating non-GAAP diluted earnings per share are based on specific, identified amounts that impact different line items in the Consolidated Statements of Income (including cost of revenue, research and development, selling, general and administrative, operating income, interest and other expenses, net, income taxes and net income), it is useful to investors to understand how these specific line items in the Consolidated Statements of Income are affected by these adjustments. Please refer to the Reconciliation of Selected Financial Metrics from GAAP to Non-GAAP tables below.

Supporting Resources

About Amdocs

Amdocs helps those who build the future to make it amazing. With our market-leading portfolio of software products and services, we unlock our customers’ innovative potential, empowering them to provide next-generation communication and media experiences for both the individual end user and large enterprise customers. Our 31,000 employees around the globe are here to accelerate service providers’ migration to the cloud, enable them to differentiate in the 5G era, and digitalize and automate their operations. Listed on the NASDAQ Global Select Market, Amdocs had revenue of $4.58 billion in fiscal 2022.

For more information, visit Amdocs at www.amdocs.com.

This press release includes information that constitutes forward-looking statements made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995, including statements about Amdocs’ growth and business results in future quarters and years. Although we believe the expectations reflected in such forward-looking statements are based upon reasonable assumptions, we can give no assurance that our expectations will be obtained or that any deviations will not be material. Such statements

involve risks and uncertainties that may cause future results to differ from those anticipated. These risks include, but are not limited to, the effects of general macro-economic conditions, prevailing level of macroeconomic, business and operational uncertainty, including as a result of geopolitical events or other global or regional events such as the COVID-19 pandemic, as well as the current inflationary environment, and the effects of these conditions on the company’s clients’ businesses and levels of business activity, Amdocs’ ability to grow in the business markets that it serves, Amdocs’ ability to successfully integrate acquired businesses, adverse effects of market competition, rapid technological shifts that may render the Company’s products and services obsolete, potential loss of a major customer, our ability to develop long-term relationships with our customers, and risks associated with operating businesses in the international market. Amdocs may elect to update these forward-looking statements at some point in the future; however, Amdocs specifically disclaims any obligation to do so. These and other risks are discussed at greater length in Amdocs’ filings with the Securities and Exchange Commission, including in our Annual Report on Form 20-F for the fiscal year ended September 30, 2022 filed on December 13, 2022.

Contact:

Matthew Smith

Head of Investor Relations

Amdocs

314-212-8328

E-mail: dox_info@amdocs.com

AMDOCS LIMITED

Consolidated Statements of Income

(In thousands, except per share data)

AMDOCS LIMITED

Selected Financial Metrics

(In thousands, except per share data)

Free Cash Flows

(In thousands)

Normalized Free Cash Flow^(b) for the three months ended December 31, 2021: $185,679, excluding net capital expenditures related to the new campus development of $29,307 and payment for acquisition related liability of $9,479.

AMDOCS LIMITED

Reconciliation of Selected Financial Metrics from GAAP to Non-GAAP

(In thousands)

AMDOCS LIMITED

Condensed Consolidated Balance Sheets

(In thousands)

AMDOCS LIMITED

Consolidated Statements of Cash Flows

(In thousands)

AMDOCS LIMITED

Supplementary Information

(In millions)

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