Thanks Michael. We are pleased to close another strong quarter and year for Magnite. As Michael mentioned, fourth quarter results for both CTV and DV+ contribution ex-TAC exceeded the high end of our guide. We also reported an adjusted EBITDA margin of 43% for the quarter, which is above the high end of our guidance range. For the full year 2023, we generated contribution ex-TAC of $549 million, ad spend surpassing $5 billion, adjusted EBITDA of $171 million and over $100 million of free cash flow. Total revenue for Q4 was $187 million, up 7% from Q4 2022. Contribution ex-TAC was $165 million, up 6%. CTV contribution ex-TAC was $64 million, beating our guidance and was down 2% from last year. CTV contribution ex-TAC was pressured in the quarter as we had expected by mix shift and managed service softness trends, which we've discussed in the last several quarters, but showed marked improvement over the third quarter. DV+ contribution ex-TAC was $102 million, an increase from $92 million or up 11% compared to last year and continues to be an area of strength as Michael mentioned. Our contribution ex-TAC mix for Q4 was 38% CTV, 44% mobile and 18% desktop. Geographically, our international investments are paying off and results continue to outpace our U.S. results led by our DV+ business with new publisher wins and overall volume growth. From a vertical perspective, automotive, health and fitness, travel and retail were our strongest performing categories. Categories that did not perform as well were business services, home and garden, and financial services, and political was also down significantly as we cycled the election spend from 2022. Total operating expenses, which includes cost of revenue for the fourth quarter, were $152 million, a decrease from $204 million in the same period last year. A primary driver of the decrease from last year was the accelerated amortization resulting from the consolidation of our legacy platforms into Magnite Streaming, which was completed in July. Adjusted EBITDA operating expense for the fourth quarter was $95 million at the midpoint of our guidance range, up 3% from last year. Net income was $31 million for the quarter compared to net loss for the fourth quarter of 2022 of $36 million. Adjusted EBITDA was $70 million and adjusted EBITDA margin was 43% for the quarter, which compares to $64 million and a margin of 41% last year. As a reminder, we calculate adjusted EBITDA margin as a percentage of contribution ex-TAC. GAAP earnings per diluted share was $0.16 for the fourth quarter of 2023 compared to a loss of $0.27 for the fourth quarter of 2022. Non-GAAP earnings per share in the fourth quarter of 2023 was $0.29, compared to $0.24 reported last year. The reconciliations to non-GAAP income and non-GAAP earnings per share are included with our Q4 results press release. Our cash balance at the end of Q4 was $326 million, an increase from $311 million at the end of last quarter. Capital expenditures, including both purchases of property and equipment and capitalized internally used software development costs, were $12 million for the quarter. Operating cash flow, which we define as adjusted EBITDA less CapEx, was $59 million for the quarter. Our net interest expense for the quarter was $8 million. As we announced earlier this month, we successfully refinanced our credit facilities that we had entered into in connection with our SpotX acquisition in April 2021. Our prior structure consisted of a revolver with a capacity of $65 million and a term loan B with a balance of $351 million outstanding. We replaced this facility with a new $365 million term loan B and an upsized $175 million revolver. We believe that these new facilities provide significant benefits and flexibility to Magnite. First and foremost, the new debt structure removed the springing maturity covenant tied to our convertible notes due in March of 2026, which would have accelerated the maturity date of all term loans and made them current in December of 2025 absent a refinancing of the converts. Under our new credit facility, we now have maximum flexibility with our converts and can either repay them at maturity or repurchase them earlier, depending on our view of the trading discount. Second, we were able to upsize our revolver from $65 million to $175 million with a lower interest rate, which increases our liquidity profile and gives us greater cash and financial flexibility. The revolver matures in February 2029. Third, we were able to refinance our term loans with a lower cash interest cost and extend their maturity to February of 2031. And finally, our new facilities carry the same rating, are leverage neutral, and continue to be covenant light with equal or better terms than the original debt. In less than three years since the acquisition of SpotX, we have been able to reduce our convert balance from $400 million to $205 million and reduce our net leverage ratio from 6.2x to 1.2x at the end of 2023. This is a huge accomplishment driven by the strong cash flow generation of our business. In conjunction with the closing of our new credit facilities, our Board also approved a new program that allows for the repurchase of up to 125 million of common stock or convertible notes through February 1 of 2026. This program replaces the existing authorization and allows us to be opportunistic in our capital deployment. From a capital structure standpoint, we're now targeting a net leverage ratio of 1x or less longer term. Given the normal seasonality of our cash flow, we will likely see a cash decrease and a corresponding increase in our net leverage ratio at the end of Q1 similar to last year, but expect increases and improvement in subsequent quarters. I will now share our expectations for the first quarter and full year. For the first quarter, we expect contribution ex-TAC to be in the range of $122 million to $126 million. Contribution ex-TAC attributable to CTV to be in the range of $49 million to $51 million, contribution ex-TAC attributable to DV+ to be in the range of $73 million to $75 million and adjusted EBITDA operating expenses to be between $106 million and $108 million, which implies adjusted EBITDA margin of approximately 14% for Q1 at the midpoints. The increase in adjusted EBITDA operating expense for Q1 is primarily driven by an inaugural all company gathering in January, the impact of annual merit increases as of January 1, and the 2024 payroll tax reset. To provide additional context beyond our Q1 expenses, we expect adjusted EBITDA operating expenses to come down in Q2 and to be between $101 million and $103 million. For the full year we expect strong continued ad spend growth, particularly in CTV, and we are raising total contribution ex-TAC to grow approximately 10%, up from high single digits previously, with CTV to grow faster than DV+. We're also raising adjusted EBITDA margin expansion to 100 basis points, up from 50 basis points to 100 basis points previously at this level of top line growth. We also expect double digit percentage growth of adjusted EBITDA, with an even higher growth in free cash flow and total CapEx to be in the mid $40 million range, including PP&E and capitalized software. I am very happy with our strong finish to 2023, and I'm encouraged by the progress in our CTV revenue growth recovery. I'm also particularly pleased with our completed refinancing, which provides a stable capital structure for the foreseeable future. And with that, let's open the line for Q&A.