to and adjusted on the of revenue end guidance us. everyone total and Altair the QX, midpoint a for you range. for thank the of and joining EBITDA exceeding Hello call, Jim. software guidance strong was the you, above range revenue, high Thank had our
for half performance defense, products strong verticals, customers' solutions workflows and are was be fundamental products analytics. performance especially growth robust.
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to remain we striving exceed customers' product innovation committed and forward, to expectations. excellence, As we our look
I the than As of changes are a other our reported growth review in currency. impacted our by rates in expenses rates. some reference in therefore, both revenues and exchange dollar, be the constant remarks, transacted reported and aid of U.S. in may results my To reminder, our currencies results, and will foreign throughout
$XXX.X and total constant For currency reported a year-over-year the of second were calculated X.X% currency. billings quarter, in X.X% in increase million,
and reported defense, our software. with QX new convergence capabilities Software million, currency business revenue by was aerospace rates year-over-year in to was X.X% XX.X% XXXX. constant leveraging currency, increase and in expansion in where in increasingly in strength notable in year-over-year The increase $XXX.X software a the QX of revenue customers high and compared and of retention driven are
romAI using avionic customer root For aerospace another instance, one analysis. using is cause system, for for while of predictive and RapidMiner optimization an maintenance multidisciplinary is
these gives offerings. comprehensive our engineering Our in unique of deliver software trajectory confidence solutions AI-powered long-term ability to us the great
an engineering compensation, quarter software points. strength driven our be increase XX.X% in margin of in revenue currency, Total higher in engineering QX Additionally, APAC. where was second XXXX. and XX compared other in year $XXX.X X.X% revenue and the and gains stock-based X.X% the basis in which margins. our excludes revenue, revenue, which to gross was increase year-over-year reported with margin, across The mixed in broad-based QX margins includes gross than period, EMEA, constant services the a toward XX.X% shift services in are and to gross software by continues year-over-year Non-GAAP prior non-GAAP currency other compared of in Americas, the was increase to QX, million,
Software year. in compared of revenue XX.X% to prior was the revenue QX, in total XX.X%
sales in to investments and $XXX.X just We the growth $XX.X million operating of reflecting in amortization development on prior assets, continue of growth stock-based compensation engineering was EBITDA stock-based to expenses QX period, margins $XXX.X in and GAAP us. prior intangible prior continued blended expect reflecting sustained outpace capacity year-over-year and $XX.X to planned gross $XXX.X that to to making million software year in the to in were due the reduction product were period, expense.
Non-GAAP or or operating million, higher. will compared total XX.X% excludes X.X% year. of services exciting seeing Adjusted capitalize million we're compared of $XX.X million, our other and we're to the compared ahead XX.X% compensation large year and million, which expenses, opportunities in revenue, of continue revenue the therefore push revenue, and the
million balance cash equivalents with year our of increase of despite $XX.X prior an million sheet, for settlement ended period These and million approximately paying in the the from we to and Moving in $XX.X increases cash quarter $XX.X our equivalents, cash cash $XXX.X and year-end. from driver equivalents in were million the convertible X-month prior primary continues $XX.X million cash and compared was period, second be in the the quarter.
Free of flow strong $XX.X of XX.X%. to cash for cash Free the ended to XXXX flow the an year notes balance. our XXth, million cash was and June increase us
going We focus shareholder to forward, discipline significant generate value. continue to to capital continue cash we and flow expect allocate free will and with long-term to drive
We've provided reported our to guidance full reconciliation guidance impact currency XXXX. detailed release, both currency expectations, GAAP tables on press we've Turning constant rates for comparable and clarity To provide our growth in the earnings tables. in to year amounts. FX QX in including our and provided to
in a software currency. revenue $XXX in reported XX.X% of of we the $XXX year-over-year to expect currency, QX, constant XX.X% X.X% to XX.X% to For in range million, million and increase
outlook year $XXX revenue to over previous revenue million, past expect constant also constant to currency in to changes the and and X.X% foreign rates software are we increase in for be a are million of therefore, adjusting These currency we reported our of currency For currency, X.X% in offsetting, X.X% amounts XXXX, raising $XXX exchange reported full and a to year-over-year in XX.X% currency. software quarter. in year for full range
to engineering includes X.X% currency, which total million, reported expect currency. increase XX.X% services $XXX year-over-year revenue, the We revenue, to in constant $XXX to QX and of in XX.X% range of XX.X% million and in other a
offsetting constant in outlook year our currency other maintaining includes our revenue. revenue software total year This services in XXXX, full for outlook constant reduction full are increase engineering and and in the currency previous For an in revenue. we
to However, to rates $XXX X.X% constant $XXX are our past in changes to of foreign of currency quarter, in the increase our exchange outlook in to reported year currency due we and X.X% over in million currency, range a X.X% year-over-year million, currency. adjusting full X.X% reported to a
revenue adjusted For or we of million XXXX. revenue, $XX QX $XX or million, in to XX.X% compared expect XX.X% of range million, the to total EBITDA of QX, XX.X% to $XX.X in total
in to therefore XX.X% $XXX.X we by to EBITDA to adjusted finally, we million, EBITDA, been the for change and XX.X% full year full in our the total changes For exchange our full rates, million XXXX, have impacted year adjusting year a of are of rates cash exchange in expect $XXX of been also in $XXX total or million, flow revenue, in foreign $XXX outlook guidance. changes XXXX, impacted with of line free adjusted $XXX range therefore, has adjusted million which has to to revenue in million, XX.X% the and currency also range foreign compared XXXX.
And or
are As a which to flow expectations reminder, fluctuate collections patterns, sensitive our seasonally. cash billings and
continue to of with EBITDA adjusted We pleased high flow free at as percentage approximately XX%. a cash be the
are and and to your about are second we performance Operator? QX forward maintaining to be take half.
With looking that start strong excited questions. the happy to that, We in our we'd momentum first half the year,